Birds Are Believed to Have Evolved from ________

question 49

Multiple Choice

Birds are believed to have evolved from ________.

• A) gymosperms
• B) angiosperms
• C) mammals
• D) fish
• E) reptiles

---

Definitions:

Indifference Curve

A graph representing different bundles of goods between which a consumer is indifferent, showing the combination of two goods that give the same level of satisfaction to the consumer.

Marginal Utility

The change in total utility a person receives from consuming an additional unit of a good or service.

Utility Function

A mathematical representation that ranks an individual's preferences over a set of goods and services, based on the level of satisfaction or utility derived.

Optimal Utility Rule

A principle in consumer theory stating that consumers allocate their income in a way that maximizes their total utility, given their budget constraint.