1. When several parties combine forces to obtain a majority, they form a coalition government. The answer would be choice B.
2. Any party other than the Democratic or Republican party is called a third party. The answer would be letter D.
3. Nearly all elected officials in the United States are selected by single-member districts. The answer would be letter C.
Answer:

The social boycott is the act of persistently avoiding a person by other members of the society. It is society's collective refusal to engage a person in the normal social and commercial relations. Its goal is to make that individual so uncomfortable that he decides to voluntarily leave the society
Explanation:

A) true. For example catholic and ortodox church express their believes in trinity
Answer:
opportunity cost
Explanation:
opportunity cost is a concept in economics used to describe opportunity lost or alternative use of resources forgone as a result of allocation of resources to alternatives. In the example above holly gives up the interest that could have been earned from her investment and allocates the money resource to another alternative-book. Her opportunity cost here is the investment value as a result of the interest that would have accrued to her.