Which of the Following Was the Key Characteristic of Early

question 104

Multiple Choice

Which of the following was the key characteristic of early humans that allowed them to effectively out-compete other species?

• A) Color vision allowed for the detection of ripe fruit and game.
• B) Mastery of fire allowed for provision of warmth in shelters.
• C) Agile hands allowed for the creation and use of tools.
• D) Mastery of fire allowed food to be cooked.
• E) A larger brain allowed for more complicated behavior.

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Definitions:

Marginal Revenue

The additional income earned by selling one more unit of a product or service, reflecting the incremental increase in total revenue.

Nondiscriminating Profit-maximizing Monopolist

A monopolist who charges a uniform price for all units of output sold to all customers, maximizing profit without price discrimination.

Inelastic

A characteristic of goods whose demand or supply is not significantly affected by changes in price.