Michelangelo, rafael, donatello, and leonardo are all thirty-five-year-old successful painters from italy. the fact that they are all from italy would put them in the same
a. alliance.
b. cohort.
c. peer group.
d. union.

The fact that they are all from Italy would put them in the same "cohort" since in this setting "cohort" implies simply a group of people bonded together in some way, but that fact that they were all the same age could make them a "peer group".