The correct answer is C) The threads on the male end are protected by the hose. When fire hose is stored, it is typically rolled to protect the couplings and threads on the male end of the hose. The rolled configuration helps shield the threads from damage, wear, and the entry of foreign objects that could interfere with the hose's ability to make a proper connection. This is an important safety consideration, as the hose needs to be able to quickly and reliably attach to fire hydrants or other equipment during an emergency. The other answer choices are incorrect because they do not accurately describe the primary reason for rolling spare fire hose. While options A and B provide some potential benefits, protecting the threads is the main purpose. Option D about expelling water is not relevant, as the hose would be drained before storage.