Answer is C is correct. As per Section 56 of the Indian Contract Act, a contract to do an act which, after the contract is made, becomes impossible, or, by reason of some event which the promisor could not prevent, unlawful, becomes void when the act becomes impossible or unlawful. Therefore option (c) is the correct answer.

Answer is C is correct. commercial impossibility and any restriction through government regulation does not lead to frustration of contract rather destruction of subject matter is one of the grounds. Therefore option (c) is the correct answer.

Answer is D is correct. When an agreement is discovered to be void, or when a contract becomes void, any person who has received any advantage under such agreement or contract is bound to restore it, or to make compensation for it to the person from whom he received it. Therefore option (d) is the correct answer.

Answer is C is correct. Specific relief can be granted only for the purpose of enforcing individual civil rights and not for the mere purpose of enforcing a penal law as per Section 4 of the Act. Therefore option (c) is the correct answer.

Answer is C is correct. As per Section 6(3) of the Act, no appeal shall lie from any order or decree passed in any suit instituted under this section, nor shall any review of any such order or decree be allowed. Therefore option (c) is the correct answer.

Answer is C is correct. A retracted confession is a statement made by an accused person before the trial begins, by which he admits to having committed the offence but which he rejects at the trial. Therefore option (c) is the correct answer.

Answer is B is correct. As per Section 26 of the Indian Evidence Act, No confession made by any person whilst he is in the custody of a police officer, unless it be made in the immediate presence of a Magistrate1, shall be proved as against such person. Therefore option (b) is the correct answer.