A Researcher Selects a Quantitative Experimental Research Design

A researcher selects a quantitative experimental research design. For what reasons does the researcher select this particular design?

A) To generate a theory
B) To answer a research question
C) To determine which of several causes is the true one
D) To prove a theory
E) To disprove a hypothesis
F) To determine the strength of the relationship between the independent variable and the dependent variable