Answer:
prohibited because the contract is for service from a specific person.
Step-by-step explanation:
Johann, a guitarist and a well known musician agrees to teach guitar lessons to Elton. They made a contract where Johann will give ten guitar learning lessons to Elton for $2,000. But in the contract, delegation of any kind is not prohibited.
Eugene is also guitarist, who is a enthusiastic player and a second-year musical student. So Johann delegates his responsibility to Eugene of teaching Elton guitar.
But the delegation will not accepted or will be prohibited since the contract is made between Johann and Elton. So other person is not allowed to teach Elton as per the contract, because the contract is made to avail service from Johann only.
Thus the delegation will be prohibited.