Question

Answer! The amount of time it takes to complete a reading assignment might be a function of which of the folowing ?

Answer 1

Amount is a function of what means
the amount is dependent on what variable

well, the amount of time to read would be depending on the number of pages or your reading speed

looking at the options, A is clearly the answer

Answer 2

Well its a because some people read at different pace and some people read an amount of words at an amount of time so a is the answer because of humans reading pace and average.