LSAT Practice Exam Questions And Correct
Answers (Verified Answers) Plus Rationales
2025/2026 Q&A
1. If all cats are mammals, and some mammals are dogs, which of the following
must be true?
A) Some cats are dogs
B) Some mammals are cats
C) No cats are dogs
D) All mammals are cats
E) All cats are dogs
Answer: B
Rationale: If all cats are mammals, then at least some mammals must be cats.
The statements about dogs do not affect this conclusion.
2. “All students who study regularly pass the exam. John passed the exam.
Therefore, John must have studied regularly.” The argument above is:
A) Valid
B) Invalid
C) Strong
D) Weak
E) Sound
Answer: B
Rationale: The conclusion assumes that only regular studying leads to passing,
which is not given. This is a logical fallacy (affirming the consequent).
3. Which of the following, if true, would most weaken the argument that
increasing taxes on sugary drinks reduces obesity?
A) Most people buy sugary drinks online
B) People consume sugary drinks at restaurants
, C) Obesity has multiple causes besides sugary drink consumption
D) Sugary drinks are heavily marketed
E) Taxes on sugary drinks are collected by the government
Answer: C
Rationale: If obesity is caused by many factors, reducing sugary drinks may not
significantly reduce obesity, weakening the argument.
4. “Either the library is open, or the cafeteria is closed. The library is not open.”
Which statement must be true?
A) The cafeteria is open
B) The cafeteria is closed
C) Both are closed
D) Both are open
E) Nothing can be concluded
Answer: B
Rationale: By the rule of disjunction “either…or,” if one option is false, the other
must be true.
5. A survey found that 80% of people who exercise regularly report feeling
happier. Which conclusion is best supported?
A) Exercise causes happiness
B) Happiness causes exercise
C) There is a correlation between exercise and happiness
D) Exercise does not affect happiness
E) Only regular exercisers are happy
Answer: C
Rationale: The survey shows correlation, not causation. The data cannot
confirm cause-and-effect.
6. If the first two statements are true, the third statement is:
1. All politicians are public figures.
2. Some public figures are celebrities.
Answers (Verified Answers) Plus Rationales
2025/2026 Q&A
1. If all cats are mammals, and some mammals are dogs, which of the following
must be true?
A) Some cats are dogs
B) Some mammals are cats
C) No cats are dogs
D) All mammals are cats
E) All cats are dogs
Answer: B
Rationale: If all cats are mammals, then at least some mammals must be cats.
The statements about dogs do not affect this conclusion.
2. “All students who study regularly pass the exam. John passed the exam.
Therefore, John must have studied regularly.” The argument above is:
A) Valid
B) Invalid
C) Strong
D) Weak
E) Sound
Answer: B
Rationale: The conclusion assumes that only regular studying leads to passing,
which is not given. This is a logical fallacy (affirming the consequent).
3. Which of the following, if true, would most weaken the argument that
increasing taxes on sugary drinks reduces obesity?
A) Most people buy sugary drinks online
B) People consume sugary drinks at restaurants
, C) Obesity has multiple causes besides sugary drink consumption
D) Sugary drinks are heavily marketed
E) Taxes on sugary drinks are collected by the government
Answer: C
Rationale: If obesity is caused by many factors, reducing sugary drinks may not
significantly reduce obesity, weakening the argument.
4. “Either the library is open, or the cafeteria is closed. The library is not open.”
Which statement must be true?
A) The cafeteria is open
B) The cafeteria is closed
C) Both are closed
D) Both are open
E) Nothing can be concluded
Answer: B
Rationale: By the rule of disjunction “either…or,” if one option is false, the other
must be true.
5. A survey found that 80% of people who exercise regularly report feeling
happier. Which conclusion is best supported?
A) Exercise causes happiness
B) Happiness causes exercise
C) There is a correlation between exercise and happiness
D) Exercise does not affect happiness
E) Only regular exercisers are happy
Answer: C
Rationale: The survey shows correlation, not causation. The data cannot
confirm cause-and-effect.
6. If the first two statements are true, the third statement is:
1. All politicians are public figures.
2. Some public figures are celebrities.
