Which of these can be described with a proportional relationship?

A
An athlete runs 1 mile in 7 minutes and another mile in 7.5 minutes.

B
An athlete does 10 push-ups for every 1 mile she runs.

C
An athlete runs 2 miles and does 25 push-ups.

D
An athlete runs 5 miles 3 times a week.

When you dilate a figure with a scale factor of 1/2, what will the dilated figure look like?                                                                                           a: the dilated figure will have side lengths that are half the length of the original side lengths.                                                                          b: the angles in the dilated figure will be half the measure of the original figure.                                                                                c: the dilated figure will have side lengths twice the length of the original.