Which of the following terms describes a situation in which one event happened directly because of another event?
a. correlational relationship
b. causal relationship
c. historical relationship
d. periodic relationship

The Actual answer is B. A causal relationship. If there is a causal relationship between two things, one thing is responsible for causing the other thing.

B. Causal relationship

Explanation:

A causal relationship, also called cause and effect relationship, occurs when two events are related because a first event has a direct influence on another, in other words, because a first event causes the other to happen. An example of this is the high temperature in a room and a bar of melted chocolate, the high temperature or the heat of the environment causes the chocolate bar to become liquefied, therefore, we can say that the relationship of these two events is causal.