Answer:
Ricardo's opportunity cost when taking the promotion is:
- The time he spent with his friends.
Step-by-step explanation:
Opportunity cost regularly refers to what is waived once a decision is made, in Ricardo's particular case, when taking the promotion with an eye on the salary increase that he would have, despite the fact that he will lose part of the time he dedicates to his friends, he is giving up the latter, which would be his opportunity cost in the near term, since in the medium or long term he may lose the friendship of said friends if he cannot dedicate time to them due to his work, which would also be taken as an opportunity cost if it happened.