Lisa is planning a field investigation and needs to manipulate variables to test her hypothesis. Which of the following BEST describes what she is applying?
A. a controlled treatment to observe the effect on the independent variable
B. an experimental treatment to observe the effect on the independent variable
C. a controlled treatment to observe the effect on the dependent variable
D. an experimental treatment to observe the effect on the dependent variable
1 answer
B. an experimental treatment to observe the effect on the independent variable