Term is used to describe what she is studying is:
C. Business cycle
Step-by-step explanation:
The business cycle is studied to know what is expected to profit and what is expected to grow down in a particular cycle.
This is the thing that must be studied to anticipate growth and then invest in the firms that are touted to grow and ignore the ones in which there is no anticipated growth.
This basically is a study of predictions however and there are a lot of factors that come into the play in the investing front.
The study of the business cycle is thus something that is done case by case and time by time.