Final answer:
A monopoly features a single producer and uniform pricing for all market segments, ensuring no close substitute products are available.
Explanation:
A monopoly is characterized by having a single producer in the market, which implies no close substitute products being available to consumers. The uniform price feature of a pure monopoly signifies that the monopolist sets the same price for all segments of the market, due to various reasons like legal constraints or to prevent arbitrage opportunities.
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