What Kareem needs to do to change the timing of animation is change the delay and duration for the slide.
A typical Presentation slide helps to keep an audience's attention during a presentation and as well provide additional supporting information.
A presentation slides entails the use of text, images, artworks, aesigns, animation to facilitate a smart slide for proper presentation.
Animation basically move on the slides and are timed/programmed to move in a specific time or direction.
Therefore, in conclusion, Option C is correct. All Kareem have to do to change the timing of an animation in the slide is changing the delay and duration for the animation.
hope this helps