By he NIH trying a new drug to help reduce pain associated with sickle-cell anemia, it's an example of an "experiment".
An experiment involves a hypothesis (an educated guess as to what's going to happen) and trying out the hypothesis and finding the solution.
I would say E as it has to do with nutrition and dietetics and they would be registered.
Answer:
Religion is understood to influence subjective well-being through various ways: the religious community gives people a sense of belonging and provides an important source of social support; religion gives people's lives meaning and purpose; and finally, religion encourages people to lead healthier lifestyles.
Hope this helps!
Basic needs? I think that is correct.