Fruits stored in a cold chamber exhibit longer storage life because

The correct answer is rate of respiration is decreased.

• The shelf life of fruits and vegetables can be increased by keeping them in cold storage this results in a slower ripening process and fruits and vegetables remain fresh for a longer duration. 
• Fruits when stored in a cold chamber exhibit a longer storage life because their rate of respiration is decreased. When fruit respires they release out ethylene which helps in ripening. 
• Ethylene is also known as the 'fruit-ripening hormone'. Every fruit has a different level of ethylene production.
• The rate of ethylene production decreases when fruits are kept in cold storage. Thus, the shelf life of fruits increases.