Which of the following would be difficult to assess using empirical research

How does enthusiasm one advance on the job?

What is the purpose of the tenth amendment? a. to establish the electoral college b. to give each state constitution the same protection as the federal constitution c. to grant to the citizens of each state access to the federal court system powers d. to limit the power of the central government by establishing reserved powers for states and individuals

What do you think about that for many of the sexual dysfunctions, the clinician gets to decide if there is a deficiency in functioning by using only their own clinical judgment that is not based on research or particular quantitative data?