Marcie was conducting an interview with the local homeless shelter supervisor. The supervisor kept answering "Yes" or "No" to all of Marcie's questions. Marcie was getting frustrated because she was not getting the material she needed

What was the problem here?
a. Marcie was not at fault; the supervisor was just closed-minded and not helpful.
b. Marcie had planned only closed-ended questions and forgot to follow up by asking "Why?"
c. The supervisor was probably new and inexperienced and didn't know the answers.
d. Marcie should have asked to speak to more than one person at the shelter so she could have gotten more variety in the answers.

b