The cats usually
(eat) their food in the kitchen.​

If you're asking to change EAT with a better word I would change it to CONSUME

Explanation:

it is the background information on the characters and setting explained at the beginning of the story. the exposition will often have information about events that happened before the story began. the exposition is often the very first part of the plot.

i would pick a. i think this is more of a personal question though.