According to the Text, If During the Design Phase of Your

Multiple Choice

According to the text, if during the design phase of your research you discover a problem with internal validity, you should:

A) abandon the research completely and start over.
B) ignore the problem and go ahead with your study because maintaining internal validity is not that important.
C) identify the source of the problem and redesign your study.
D) wait until after you have run your study to determine if internal validity was seriously threatened.