Mateo, a waiter at a restaurant, usually takes food orders from customers. on his way back to the kitchen, he consciously repeats the orders in his mind so that he does not forget them. in the context of short-term memory, mateo applies the technique of to remember the orders.

Rehearsal

Explanation: In accordance with short-term memory, rehearsal is the process in which entered information or data is mentally repeated in the mind .It helps to store arriving information in the working memory for short period of time to help complete the task through  that information.

According to the mentioned situation in  question, Mateo is using rehearsal technique for remembering the information by repeating it in mind so that he does not forget the order and can successfully tell order to the food preparation team .

the main idea of monster inc is good and evil

if im wrong correct me but have a blessed day!