Social studies is always confusing. Get used to it.
I believe the answer you are looking for will be an Era
The answers are
<span>- medical social work
- school social work
The social work that they did in the field of medicine involved giving free medicine To poor people who couldn't afford to buy one. In the educational (school) field, they did this by providing scholarship application for poor people who don't have the money to enter in regular ways</span>
I believe the answer is biological.
<span>serve our own interests. If an interest group does not reflect our personal values then it is quickly perceived as being wrong and spreading values that work against what we think of as the truth. This quickly sets up an adversarial role of competition rather than sharing dissimilar ideas.</span>