Is another word for designate.
a. break
c. assign
b. gather
d. discuss

  First, let us define each word (according to the dictionary):

A. Break means to separate something into two or more pieces whether violently or not.
B. Gather means to bring and collect things together.
C. Assign means to give someone a task or duty regarding a certain topic, event, etc.
D. Discuss means to share someone’s idea or information to a group of people

Designate is choosing a particular job for someone and assigned it to him or her. Therefore letter C. Assign matches the synonym for designate.