Option (1) is incorrect: A minor cannot be a partner of a firm.
Option (2) is incorrect: A minor cannot be a representative of a firm.
Option (3) is incorrect: A minor is not entitled to carry on the business of a firm.
Option (4) is correct: U/s 30 of the Act, a minor can be admitted to the benefits of a partnership with the consent of all the partners for the time being, but not in the losses.