The answer choice which is not a barrier to entry in a monopolized market is; Choice A; A single large firm.
A monopolized market is a theoretical scenario that Characterises a market where only one company may offer products and services to the public. A monopolistic market is the direct opposite of a perfectly competitive market, in which an infinite number of firms operate.
On this note, the choice which is not a barrier to entry in such market is; A large single firm.
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