Which one of the following is a single-use plan?

Budget

The correct answer is option 3 i.e. Budget.

A single-use plan is developed for a one-time event or project. Such a course of action is not likely to be repeated in future, i.e., they are for non-recurring situations. The duration of this plan may depend upon the type of the project. It may span a week or a month. A project may sometimes be of only one day, such as, organising an event or a seminar or conference. These plans include budgets, programmes and projects. They consist of details, including the names of employees who are responsible for doing the work and contributing to the single-use plan. For example, a programme may consist of identifying steps, procedures required for opening a new department to deal with other minor work. Projects are similar to programmes but differ in scope and complexity. A budget is a statement of expenses, revenue and income for a specified period.