The scale factor that quadruples the the size of a figure is

The size of the figure will be quadruple too.

Step-by-step explanation:

A scale factor refer to a number which can be a fraction, a whole number or even decimal, which increases or decreases certaing figure.

For example, if we say that a figure has a scale factor of 2, that means the figure will increase double.

Now, in this case, we have a scale factor that quadruples the figure, which means it's being multiplied by 4, because the scale factor is 4.

Therefore, the size of the figure will be quadruple too.

Quadruple means 4 so 4 is your answer.