Which of the following relief is NOT available to Manoj?

Option 1 -> This is a valid remedy where the defect in the car can be repaired/removed by the seller or manufacturer.

Option 2 -> This is a valid remedy under consumer protection laws allowing replacement of the defective car with a new one.

Option 3 -> This is a valid remedy where the consumer can return the defective car and obtain a refund of the purchase price.

Option 4 -> This is NOT a valid remedy as it is contradictory - a consumer cannot simultaneously retain the car and receive a full refund of the price paid.

Hence, Option 4 -> A consumer cannot keep the defective product and also get a complete refund, as this would mean obtaining the car for free. Consumer remedies involve either: (a) repair, (b) replacement, or (c) refund with return of goods - but not retention with refund -> correct