Which of the Following Statements Is Most Consistent with the Information

question 13

Multiple Choice

Which of the following statements is most consistent with the information in the figure?

• A) Fossils of brachiopods and arthropods first appeared during the Cambrian, but these groups had ancestors that evolved before the Cambrian.
• B) Fossils of sponges and cnidarians first appeared during the Cambrian, but these groups had ancestors that evolved before the Cambrian.
• C) Chordates evolved from echinoderms.
• D) Sponges and cnidarians first evolved during the Cambrian.

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Definitions:

Diminishing Returns

A principle stating that after a certain point, additional investment or effort yields progressively smaller increases in output.

Marginal-cost Curve

The marginal-cost curve represents how the cost of producing one additional unit of a good changes as its production volume varies.

Marginal Product

The additional output that is generated by employing one more unit of a specific input, ceteris paribus.

Total Fixed Cost

The sum of all expenses that remain constant regardless of the level of production or output within a business.