In an experiment on how drinking dark beverages affects tooth color, red wine, cola, coffee, and tea are tested. in doing so, the researchers gathered people of the same age and gender into groups for testing. by making sure that each group had people of the same age and gender, the researchers were

running a controlled experiment.

Explanation:

In an experiment on how drinking dark beverages affects tooth color, red wine, cola, coffee, and tea are tested. In doing so, the researchers gathered people of the same age and gender into groups for testing. By making sure that each group had people of the same age and gender, the researchers were running a controlled experiment.

A controlled experiment is the one which is carefully curated by the scientists. The chosen participants are set in a controlled environment and are observed closely, as per this experiment.

manifest functions are the recognized and intended consequences of any social pattern, while latent functions are those unrecognized and unintended consequences. to analyze the manifest functions of any social institution, we have to study its contribution to the continuation of a group, community, or society.

chavez's example shows that nonviolent protest can work well. it shows that one nonviolent man can stop a mob, which proves chavez's point and persuades people to protest nonviolently.