In the Context of Experimental Research,internal Validity Refers to the

In the context of experimental research,internal validity refers to the

A) extent to which the experimental design reflects the real-world issues it explores.
B) extent to which changes in the dependent variable are genuinely due to the manipulation of the independent variable.
C) degree to which the results of the experiment are generalizable to the larger population.
D) methodology used to carry out the random assignment of samples.