As she was walking through the park, consuela was struck by the sounds of two improvising musicians. they were standing on the grass near some benches, one playing a guitar and the other a flute, and consuela stopped to listen to them. half a dozen other people also stopped. the people listening to the musicians made up a(n) a. category. b. aggregate. c. social network. d. secondary group.

b. aggregate

Explanation:

An aggregate is a group of people who happen to be together at a certain place and time, but who otherwise do not share any particular characteristics. These people do not interact regularly, nor do they share any bond. In this example, Consuela is part of an aggregate as the people gathering together do not share any traits and simply happen to be together because of the musicians.

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.

i think it's the cabinet