As Humans Evolved, Our Teeth and Jaws Got Smaller Because

question 41

Multiple Choice

As humans evolved, our teeth and jaws got smaller because:

• A) people with small teeth and jaws were less likely to die off once we figured out how to cook and prepare foods that were easier to chew.
• B) we no longer needed to chew sinews and leather and branches to make tools.
• C) those who could speak more clearly (i.e., who were not impeded by large teeth and jaws) had higher fertility and lower mortality.
• D) when we began to cook, those with protruding jaws often burned their faces in the fire, couldn't eat, and died off.
• E) small jaws and teeth provided a selective advantage.

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Definitions:

Differential Analysis

The process of comparing the financial differences between alternative business actions in order to make informed decisions.

CVP Analysis

Cost-Volume-Profit Analysis, a financial tool used to estimate how changes in costs, sales volume, and price affect a company's profit.

Incremental Analysis

The process of comparing the additional costs and benefits of a decision to determine if it is worthwhile.

Relevant Information

Data that is applicable to the decision-making process, often involving financial and operational outcomes.