Frank is interested in knowing how introversion affects an individual's behavior in differing situations. He develops a test to measure an individual's introversion in novel situations. The items on the test constitute all possible constructs that define and determine all the variables associated with introversion. In this case, the test very likely has

content validity.

Explanation:

Content Validity is the term that refers to the ability of a test to evaluate all items representing a system that is being evaluated in the research. We can see an example of this, in the case shown in the question above, where the tests used in the survey seek to evaluate all possible constructions that define and determine all variables associated with introversion.