The correct answer is: A. Hand
A hand brake is a type of brake that is operated by hand. It is usually used as a secondary brake, in case the main brake fails. Hand brakes are not usually provided in the coach of passenger trains, because they are not considered to be safe for passengers.
A non-hand brake is a type of brake that is not operated by hand. It can be operated by a foot pedal, a lever, or a button. Non-hand brakes are usually provided in the coach of passenger trains, because they are considered to be safe for passengers.
A minor brake is a type of brake that is not as powerful as a main brake. It is usually used to slow down a train, but not to stop it completely. Minor brakes are sometimes provided in the coach of passenger trains, but they are not considered to be essential.
None of these is the correct answer, because it does not specify which type of brake is not provided in the coach of passenger trains.