Which of the Following Was a Key Obstacle That Hominins

question 15

Multiple Choice

Which of the following was a key obstacle that hominins' increase in brain size had to overcome?

• A) larger skulls demanding more elastic birth canals, even though the requirements of skeletal development during a woman's lifetime limit the elasticity of birth canals
• B) the challenges of walking with a head that is too heavy
• C) overcoming the trend of clumsy locomotion that makes hominins vulnerable to predators
• D) overcoming the trend of ever more self-sufficient children eager to separate themselves from their mothers
• E) larger skulls demanding larger birth canals, even though the requirements of upright bipedalism impose limits on the expansion of the human pelvic opening

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Definitions:

Midpoint Formula

In economics, it is often used to calculate the price elasticity of demand by comparing the percentage change in quantity demanded to the percentage change in price.

Price Elasticity

An index of how sensitive the amount of a product that is bought or sold is to variations in its cost.

Total Revenue

The overall amount of money generated by the sale of goods or services before any costs are subtracted.

Price Effect

The impact on consumer demand and producer behavior due to a change in the price of a good or service, holding other factors constant.