Which of the following best describes the main difference between experimental and non-experimental research in psychology?
A) Experimental research can be either qualitative or quantitative, while non-experimental research is only quantitative.
B) Experimental research manipulates an independent variable, while non-experimental research does not.
C) Experimental research measures variables, while non-experimental research manipulates them.
D) Non-experimental research is not able to be carried out in a lab setting.