What is any factor that makes it difficult for a new firm to enter a market referred to as

Barriers of trade

Explanation:

Barriers of trade refers are obstacles that make it difficult for new business competitors to enter an industry. It is an economic term that describes restrictive conditions to entry in a particular sector.   Existing firms benefit from barriers to trade as their revenues and profits are protected.

Barriers to trade may be as a result of high start-up cost, natural reasons, or government policy.  High start-up is the capital required is high that discourages new entrants. Natural reasons may include the presence of resources such as high-value minerals in specific geographical areas. Barriers to trade make the market less competitive.

answer; ///(d); determining who competes most closely   with whom evaluating whether industry driving forces and competitive pressure favor some strategic groups and hurt others, and ascertaining whether the profit potential of different strategic groups varies due to the strengths and weaknesses in each groups respective market positions;