When riding in an elevator people often look at the floor numbers or their cell phones, but rarely directly at other riders. This is an example of which of the following types of
norms?

Mores

Explanation:

Norms can be defined as patterns of normative behavior and internalized values exhibited by a community. Norms can be prescriptive that is promoting good behavior such as “be polite” or proscriptive if dissuade people from bad behavior; for example, “do not cheat”).

norms types are folkways, mores, taboos, and laws.

The behavior explained here ( when riding in an elevator, people often look at the floor numbers or their cell phones, but rarely directly at other riders.) can categorized under mores. Mores are types of norms that defines what is generally acceptable as morally right or wrong within  any given culture. The act of avoidance of people faces is to show courtesy or act of being polite.

Belching while eating with other people is considered morally wrong

Talking alone is regarded as a normal acceptable behavior

Child abuse is not acceptable behavior.

this is a pretty broad question and can be a pretty lengthy answer. since 1900, women have gained a lot more rights and have become active in the workforce. with women being in the workforce, men play a larger role in family life. many family tasks are shared between men and women, whereas, women used to be the sole family caretakers.

that should get you started at least.