Question

How many independent variables should you test at a time?

A two

B one

C as many as you want

D three

Answer 1

b fsss trust me and the last answer

Answer 2

b - one

Step-by-step explanation:

testing only 1 independent variable at a time ensures that one factor causes a change in your dependent variable

testing more than 1 makes it unclear which independent variable caused a change in the dependent variable