What can be compared when using purpose?

One of the researchers mentions that he is looking for "affiliation cues" in the video recordings of the experiment. how would you describe what these affiliation cues indicate?

The merode altarpiece by robert campin in what way did this painting make art history?

Which of the following american composers was not influenced by jazz? a. george gershwin b. william grant still c. amy beach d. aaron copland