Alex 深知她的 B2B 推广活动需要覆盖买家组织中的多个利益相关者。具体来说，她希望提高营销经理和项目经理对品牌的认知度。这些买家属于以下哪一类别？

The correct answer is Strategic Decision-Makers. Marketing Managers and Project Managers are key stakeholders in B2B purchasing decisions, influencing strategy and resource allocation. They are involved in evaluating solutions that align with business objectives and project requirements, making them strategic decision-makers rather than just practitioners or technical experts. Practitioners typically focus on day-to-day operational tasks, while technical and data experts primarily deal with the technical implementation and data analysis aspects, not necessarily the strategic oversight of brand awareness or purchasing.