The branch of psychology that studies how a person's thoughts, feelings, and behavior are influenced by the presence of other people and by the social and physical environment is called:

Social Psychology

Explanation:

Psychology is the empirical study of how people think, feel and behave. Social psychology refers to the impact of the presence of other people on how one behave, feel and think. In other words, it is the study of human behavior in the context of society. It determines the factors which led us to behave in a certain way while interacting with others.

The answer to the question stated above is $300.

If you have an insurance policy with a $300 premium and a $500 deductible,  you should  expect to pay $300 to the insurance company each month for coverage.

>>insurance coverage- refers to the amount of risk/ liability covered for an individual/entity by way of insurance services.