Identify the Simplest, and Logically Defensible Method, for Measuring the Outcome

Identify the simplest, and logically defensible method, for measuring the outcome of any of the research designs.

A) Use only the posttest measure and perform some type of analysis of variance on these measures to test the hypothesis that the groups vary on the posttest.
B) Use multiple analyses of variance with repeated measures including both pretest and posttest scores.
C) Use path analysis utilizing moderating and/or mediating variables.
D) Use simple tests to assess changes from pretest to posttest.