Which of the following are considered the three basic resources of a firm?

The three basic resources of a firm are indeed tangible assets, intangible assets, and organizational capabilities. Tangible assets include physical items such as machinery, buildings, and inventory that a company owns and can use in its operations. Intangible assets encompass non-physical resources like patents, trademarks, and brand reputation that can provide significant competitive advantage while not being directly tangible. Organizational capabilities refer to the skills, abilities, and processes by which a firm can effectively utilize its resources to achieve its goals. This combination of resources helps a firm create value and sustain competitive advantage in its industry.

The other options do not encompass the fundamental resource categories as comprehensively. Market share, customer base, and product variety relate more to market positioning and strategy rather than the core resources themselves. Management skills, financial instruments, and competitive edge highlight aspects of strategic management but do not directly classify as the basic resources in a traditional framework. Similarly, advertising budget, employee training, and sales strategies pertain to operational tactics rather than the foundational resources required to build and sustain a firm.