Final answer:
The correct answer is option 1) Unused hose loads should be stored in a dry and cool place to prevent age deterioration and cracks.
Step-by-step explanation:
The correct answer is option 1) Stored in a dry and cool place. To prevent age deterioration and cracks on hose lines, it is important to store unused hose loads in a dry and cool place. This helps to protect the hoses from environmental factors such as heat, sunlight, humidity, and extreme temperatures.
Exposing hose lines to direct sunlight, option 2, can cause the hoses to degrade over time due to the UV rays. Using the hoses regularly, option 3, can help maintain their functionality and prevent deterioration.
On the other hand, keeping the hoses in a wet and humid environment, option 4, can lead to mold, mildew, and degradation of the hose material, which can result in cracks and other damage.