Which of the Following Is Correct

question 245

Multiple Choice

Which of the following is correct?

• A)U.S. exports as a percentage of GDP have more than doubled since 1950. The U.S. currently has a trade surplus.
• B)U.S. exports as a percentage of GDP have more than doubled since 1950. The U.S. currently has a trade deficit.
• C)U.S. exports as a percentage of GDP have increased, but have not nearly doubled since 1950. The U.S. currently has a trade surplus.
• D)U.S. exports as a percentage of GDP have increased, but have not nearly doubled since 1950. The U.S. currently has a trade deficit.

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Definitions:

Body Cavity

A hollow space within the body that houses vital organs and allows for their expansion, movement, and protection.

Gastrovascular System

A simple digestive system that has a single opening through which food is ingested and waste material is excreted, found in certain invertebrates like cnidarians and flatworms.

Flatworm

Bilaterally symmetrical invertebrate with organs but no body cavity; for example, a planarian or tapeworm.

Simple Diffusion

The movement of molecules from an area of higher concentration to an area of lower concentration without the need for energy or a carrier.