What is the term for a high level plan to achieve a specific goal?

The correct term for a high-level plan to achieve a specific goal is "strategy." A strategy outlines a comprehensive plan that encompasses the overall direction and long-term objectives required to reach a particular goal. It involves determining the best course of action by considering various factors, including resources, market conditions, and competitive positioning.

An approach typically refers to a method of dealing with a specific situation or task but does not convey the same level of comprehensive planning or the broader vision encapsulated in a strategy. Tactics are specific actions or steps taken to implement parts of the broader strategy, while an objective is a specific target or outcome that is meant to be achieved. Thus, while approaches, tactics, and objectives are all important components of planning, they do not capture the full scope of what a strategy represents in the context of achieving a goal.