Question

What is the best definition for the underlined word based on the following sentence: "There is a strong disparity in wealth between the United States and Puerto Rico, which leaves many Puerto Ricans feeling disillusioned by the union between the two nations." A. Similarity B. Argument C. Likeness D. Lack of equality

Answer 1

D — lack of equality 

Answer 2

Assuming the underlined word is disparity, I'd say the correct answer is D. lack of equality.
Disparity means difference, inequality, so A and C are definitely incorrect. Argument doesn't really mean anything here, so B is incorrect as well. When something lacks equality, it means it is unequal, which is the exact meaning of disparity.