Which of the following best describes the dashed line shown in the regular octagon below?

A. Altitude
B. Base
C. Apothem
D. Leg

Yo y do yall have 2 stars that means yall wrong bro

Look at attachment. has all info needed. need

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet