Answer:
Two factors are there
Explanation:
When a researcher mixing two or more variable then the researcher wants to see the effect of how each variable affects the behavior of an individual and how all variables work together and affect the behavior of an individual. This process is also called a factorial design. The main aim of the research is to find out the relationship between two or more variables. It eliminates or reduces the outer variable that could affect the results of the study. In real life, we can say that it is rare that variables could be isolate. The behavior in the study could be influenced by a different types of variables that interacting simultaneously.