When does a yo-yo have the most potential energy.
a. when it’s at its highest point.
b. when it’s at its lowest point.
c. when it’s moving between its highest and lowest points.
d. when it’s moving at its top speed.

when it's at its highest point

Explanation:

it has the potential to go down

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.