Which item is listed as a barrier to entry in the context of new entrants?

• A. Product differentiation
• B. Economies of scale
• C. Government policy
• D. Distribution channels access

Answer: (B)

Barriers to entry arise when existing firms have advantages that make it costly or difficult for a new rival to compete. Economies of scale is a classic example: as a firm produces more, its average cost per unit falls. Established players with large output can set lower costs and prices, or maintain healthier margins, while a new entrant starting at smaller volumes faces higher per-unit costs. That creates a strong incentive to stay out or stay small, since breaking into the market would require significant investment to achieve comparable scale.

Other factors like product differentiation can also hinder entry by shaping customer preferences toward incumbents, government policy can restrict who can enter, and control of distribution channels can limit a newcomer's reach. But the most direct and widely cited barrier in this context is economies of scale, because it directly tie costs to output and creates a clear hurdle for new entrants trying to compete on price.