Would you expect distributions of these variables to be uniform, unimodal, or bimodal?

Would you expect distributions of these variables to be uniform, unimodal, or bimodal? Symmetric or skewed? Explain why.

a) Ages of people at a Little League game.
b) Number of siblings of people in your class.
c) Pulse rates of college-age males.
d) Number of times each face of a die shows in 100 tosses.