What Is a Sound Evaluation of the Following Questions That

What is a sound evaluation of the following questions that served as a project guide?
Would recommending the shingles vaccine to all patients ages 65 and older who are seen in our medical clinics reduce the incidence of shingles? For this population, are there any contraindications to receiving it?

A) They are missing essential elements required for a focused project.
B) They are too vague.
C) They include all essential elements for a focused project.
D) They are too specific.