Question

select the part of the subject that agrees with the bold verb. the results of lisa simpsons experiment have shocked scientists worldwide.

Explanation:

In the sentence "The results of Lisa Simpson's experiment have shocked scientists worldwide", the verb "have shocked" is plural. The part of the subject that agrees with it is "results" as it is the main noun in the subject - phrase and is plural. The pre - posiitional phrase "of Lisa Simpson's experiment" modifies "results".

Answer:

results