Question

An invalid study may have all of the following problems except __________. A. poorly designed test questions B. insufficient data C. variables that relate to the topic D. interference of unrecognized variables

Answer 1

An invalid study may have all of the following problems except "Variables that relate to the topic"

In short, Your Answer would be Option C

Hope this helps!

Answer 2

Correct answer: C). Variables that relate to the topic

An invalid study can occur if the survey or the test questions are poorly designed or it is misinterpreted. It can also occur if the insufficient data is collected. They can also occur if the unrecognized variable interferes with the results.

Hence, all the three option are the part of invalid study except option C ''Variables that relate to the topic''.