Kahneman et al. (1990) randomly chose half the students in a classroom to receive a pen; they asked those without a pen how much they would pay for one, and those with a pen how much they would sell it for. The results provided evidence for the:

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.