Which of the following is a research method in which the investigator changes one or more variables while observing the effect of these changes on another variable?
A) observation research
B) survey research
C) experiment research
D) primary research

Question

Quizplus · Accepted Answer

Experiment research involves manipulating one or more variables and observing the effect on another variable. This allows the researcher to establish cause-and-effect relationships between variables. Observation research involves simply observing and documenting behavior, while survey research involves gathering information through questionnaires or interviews. Primary research is a broad term that can include all of these methods and more.

Which of the Following Is a Research Method in Which