The answer is B) the only method for recording images of people.
He simplified everything down to the geometric essentials! Cylinder, sphere, cone, etc.
if you only get to use one notecard, I would say just the source information but if you get more than one then do one or two facts or thoughts per notecard:3
the answer is 80
you divide 64 by the numerator, 4, which gives you 16, which you then multiply by the denominator, in this case it is 5, 16 x 5 equals 80.