Answer:
B) risk of entry by potential competitors: brightview may be able to lessen the impact of this force in a low-barrier industry through economies of scale, specifically discounts on bulk purchases of raw material inputs.
Explanation:
Brightview has a lot of small competitors since the entry barriers are almost non-existent. But since the company has a great bargaining power as a buyer of raw materials, supplies, equipment, etc., they can use their lower costs as an advantage.
For example, a local landscaper probably buys a truckload of decorating rocks once a year. Instead Brightview probably purchases truckloads of decorating rocks every single week. Obviously Brightview is buying very large quantities that allows them to negotiate a lower price with their vendors. The same repeats for every single material, tools, equipment, etc.