What Is the Relationship Between Moderators and External Validity

Multiple Choice

What is the relationship between moderators and external validity?

A) Moderators suggest that associations may be spurious.
B) Moderators suggest that associations may not generalize to all subgroups of people.
C) Moderators are necessary for external validity to be established.
D) Moderators suggest that an association between two variables will extend to another variable.
E) Moderators tell us nothing about external validity.