Which statement describes the main idea of the memoir

An individual who is experiencing a prolonged period of stress would likely have levels of circulating than an individual who was not experiencing stress.

Martha participates in a research study in order to receive extra credit for her psychology class. when she arrives in the research office she is given a can of what looks and tastes like beer, but which actually contains no alcohol. in the adjoining room martha's classmate karen is also participating in the study. karen receives a can of alcoholic beer. if the experiment was designed to test the effects of alcohol on concentration, then who is exposed to the independent variable?

What is donald trump wanting to build and have finished by 2020?