How does an editor control the rhythm of a film?

a$)$ By making sure edited shots match each other in terms of continuity.

b$)$ By timing soundtrack music correctly to edited shots.

c$)$ By varying the duration of the shots in relation to one another and thus controlling their speed and accents.

$$ d$)$ By forcing shots to be part of the same montage sequence even if they don't make logical sense when placed together.