Which of the following is NOT a type of marketing plan?

The classification of marketing plans typically includes product-specific, market-specific, and company-wide plans, each serving distinct purposes within marketing strategies. Product-specific marketing plans focus on specific products, detailing strategies related to that individual offering. Market-specific plans are tailored to particular market segments, addressing the unique needs and characteristics of that audience. Company-wide marketing plans incorporate the overall marketing strategy across all products and markets, aligning them with the broader business objectives.

A sustainable development plan, while important within the context of corporate responsibility and strategic growth, does not directly fit the conventional categories of marketing plans. Instead, it emphasizes long-term environmental and social outcomes rather than being focused specifically on marketing strategies or actions related to specific products or markets. Hence, this option stands out as not fitting the established types of marketing plans.