The intensity of rivalry among competing sellers does not depend on whether?

The intensity of rivalry among competing sellers is influenced by several key factors, but it does not significantly depend on the specific circumstances described in the first choice, which pertains to the number of strong driving forces and strategic groups within the industry.

Intense rivalry can stem from existing competitors within the market, market growth rates, product differentiation, and the exit barriers that firms might face. The presence of multiple driving forces or strategic groups can shape how businesses approach their competition, but it doesn't directly dictate the intensity of the rivalry itself. Instead, it sets a framework that might influence competitive behavior, while the rivalry itself is more about how current players compete rather than the inherent structure of the industry.

In contrast, the other options illustrate factors that indeed affect rivalry intensity. Diversity in competitor visions and strategies (the second choice) can create a more competitive environment since differing objectives can lead to more aggressive tactics to capture market share. Additionally, when strong companies outside the industry begin to acquire weaker firms and implement aggressive strategies to enhance their competitiveness (the third choice), it can greatly increase competitive pressure within the industry as it introduces new players and intensifies actions among existing firms.