Final answer:
The correct excuses given to Hafid for not buying the robe were: no interest, wrong size, and too expensive. These objections are typical in sales scenarios and are featured in Og Mandino's book about a salesman's journey.
Step-by-step explanation:
The question refers to the excuses that people gave Hafid for not buying the robe, which are part of the storyline in the book The Greatest Salesman in the World by Og Mandino. The correct answer to the question is a) No interest, wrong size, too expensive. These are common objections that salespeople hear when potential customers decide not to make a purchase. Hafid, the protagonist of Mandino's book, faces these challenges as he learns the art of selling. It's critical for salespeople to understand and properly address such concerns to succeed in their sales efforts.