"Malika wants to study the effect of rising textbook prices on the number of books students purchase. In planning her study, she realizes there are other variables besides price that can affect this decision. To help build her model, she can:"

Use the ceteris paribus assumption

Explanation:

By using the ceteris paribus assumption she can assume all other conditions are equal and that the number of books purchased by students and the price of the books are the only variables in the study

With the Latin phrase, ceteris paribus, meaning all other things are the same or other things considered as being equal or remain constant, it is possible to determine causation of an event by focusing on the effect of a one of the several independent variables on the dependent variable.

the law, public safety, corrections, and security cluster prepares people for careers in planning, managing, and providing legal, public safety, protective services and homeland security, including professional and technical support services.

answer (b); /// a method of measuring the opinions of a large group of people by selecting a subset of the larger group, asking them a set of questions and then generalizing those responses;