Explanation:

- Policy: This refers to a set of principles or guidelines that direct decision-making and ensure consistency in achieving specific outcomes. It's a framework rather than a detailed plan.

- Rule: Rules are specific directives that must be followed to adhere to policies and regulations. They are more about compliance and less about strategic growth.

- Action-plan: An action plan is a detailed strategy to achieve specific goals. It includes a sequence of steps, schedules, and resources needed, making it relevant for implementing rural development initiatives.

- None of these: This option would imply that none of the above terms are suitable for describing rural development, which is unlikely in this context.

Your selected answer aligns well with the description of rural development, as it involves creating and executing specific strategies to achieve growth.

Answer: Action – plan