Final answer:
The principle of Henri Fayol that is violated when a marketing manager's plan doesn't align with the company's strategic objectives is Unity of Direction, which ensures that all organizational activities are directed towards the same goals.
Step-by-step explanation:
The principle of Henri Fayol that is contradicted by a marketing manager developing a plan that is in stark contrast with the objectives outlined in the organization's strategic plan is Unity of Direction. According to Fayol's principle of Unity of Direction, an organization should have a single plan and set of objectives to which all its activities are directed. This ensures that everyone in the organization is working towards the same goals, creating efficiency and coherence within the organizational structure.
The marketing plan at RST Global Inc. should align with the company's overall strategic objectives. If the marketing plan diverges significantly from these objectives, it could lead to confusion, inefficiency, and a lack of focus on the company's direction. This misalignment would violate the Unity of Direction principle, which emphasizes the importance of all parts of an organization operating with a shared vision and purpose.