The "a ban on certain kinds of advertising" is not among the following a barrier to entry.
- Barriers to entry are business and economic words that describe factors that may prevent or hinder new competitors from entering a market or industry, hence limiting competition. High start-up costs, regulatory restrictions, or other barriers that prohibit new rivals from simply joining a company sector are examples of these.
- A barrier to entrance, also known as an economic barrier to entry, is a fixed cost that a new entrant must pay, independent of production or sales activities, into a market that competitors lack or haven't had to incur
- Legal (patents/licenses), technical (high start-up costs/monopoly/technical expertise), strategic (predatory pricing/first mover), and brand loyalty are the four basic forms of entry barriers.
Thus the correct option is B.
Refer here to learn more about barrier to entry: https://brainly.com/question/2975624
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