Differences :

The correct answer is C. Dissimilarities.

A. Resemblances are similarities between two or more things.
B. Discrimination is the unjust or prejudicial treatment of a person or group on the basis of race, religion, sex, age, disability, or other grounds.
C. Dissimilarities are differences between two or more things.
D. Agreement is the state of being in accord or harmony.

In the context of the question, the correct answer is C. Dissimilarities. This is because the question is asking for the word that means “differences.” The other options, A, B, and D, do not mean “differences.”