Final answer:
The part-worth is the utility value that a consumer attaches to each level of each attribute in a conjoint analysis model. Therefore, the correct option is 3) part-worth
Step-by-step explanation:
In a conjoint analysis model, the part-worth is the utility value that a consumer attaches to each level of each attribute. Utility refers to a person's level of satisfaction or happiness with their choices. In this case, José wants to choose the combination that will provide him with the greatest utility, indicating the highest level of satisfaction with his choices.