Which statement is logically equivalent to "If a person is a senator, then the person is at least 35 years old"?
Correct answer: A. If a person is not at least 35 years old, then the person is not a senator.
Every "if P, then Q" statement is equivalent to its contrapositive, "if not Q, then not P". The second option reverses the statement (its converse) and the third negates both parts (its inverse); neither is equivalent.