I would think B, Position, direction and speed. I tried looking it up and B seems to be the closest answer that resembles my results as I found that energy didn’t describe the motion of an object.
To solve this problem it is necessary to apply the equations related to the Force of Friction and Energy.
By definition the friction force is defined as

Where,
Frictional Constant
N = Normal Force -> mg
At the same time we have the definition of the Energy, which can be
E = F*v
Where,
Force
v = Velocity.
Then replacing with our values we have that,

F = 0.5 *34
F = 17
The energy then would be,
E = f v
E = 17 * 0.30 = 5.1 W
Therefore the rate at which heat is generated is 5.1W
Just below the chromosphere, is the photosphere.
Hope this helped!