Final answer:
Plans can be classified as low-frequency, medium-frequency, or high-frequency based on their frequency of use.
Step-by-step explanation:
According to frequency of use, plans can be classified into three categories: low-frequency plans, medium-frequency plans, and high-frequency plans.
- Low-frequency plans: These are plans that are rarely used or used infrequently. They may be used only on special occasions or in specific circumstances. For example, a contingency plan for a natural disaster that is rarely implemented.
- Medium-frequency plans: These plans are used more frequently than low-frequency plans but are not used on a daily basis. They may be used on a regular basis but not as often as high-frequency plans. For example, a monthly budget plan.
- High-frequency plans: These are plans that are used regularly or on a daily basis. They are essential for day-to-day operations or activities. For example, a daily study plan or a weekly meal plan.