Final answer:
The conditional statement, 'If a vegetable is green, then it is broccoli' is false. A counterexample to this statement would be a green vegetable that is not broccoli, such as spinach.
Step-by-step explanation:
The conditional statement, 'If a vegetable is green, then it is broccoli' is false. A counterexample to this statement would be a green vegetable that is not broccoli. For example, spinach is a green vegetable that is not broccoli. Therefore, the statement is false.