Answer:
C.
Explanation:
The makers need to make a fast game, and this is since Sonic (hedgehog) is a bit lose in speed with the maximum being 10 m/s. Rest, no matter you consider the Mascot or make better improvisation for health through collectibles or better the cuteness, they all are not on which behalf we need improvisation. We only need to make sure that we better the speed, and that is C is the right one here.