Final answer:
Corporate strategy involves decisions about the overall scope and direction of a corporation, not just single business units or products. The focus on core competencies relates to business-level or competitive strategy.
Step-by-step explanation:
The statement that corporate strategy occurs at the business unit or product level is false. Corporate strategy is concerned with the overall scope and direction of a corporation and how it adds value to the business units within it. Instead, the focus on a single or a few products, known as a core competency, is more closely related to what is known as a business-level or competitive strategy. This type of strategy occurs at the level of individual business units or products and involves decisions about how to compete successfully in particular markets and with specific products.