bradley loved peanut butter sandwiches. he noticed that every time he tried to put the peanut butter on white bread, the bread would tear apart. which would be a good question to guide a scientific investigation on the topic?

a)
why is peanut butter hard to spread?

b)
peanut butter on wheat bread is easiest to spread.

c)
does the brand of peanut butter influence the ease of spread?

d)
if the bread is wheat instead of white, then the bread will not tear.
eliminate