Set 2: Central Ideas
Explanation
PASSAGE
The following text describes the function of the human heart. The human heart is a muscular organ that functions as a double pump. The right side of the heart receives oxygen-poor blood from the body and pumps it to the lungs to receive oxygen. The left side receives this oxygen-rich blood from the lungs and pumps it out to the rest of the body. This continuous cycle ensures that all cells receive the oxygen and nutrients they need to survive.
What is the primary function of the heart described in the text?
Detailed Explanation
Choice B is correct. The text details how the heart pumps blood to the lungs (right side) and then to the rest of the body (left side).
Key Evidence:
• "functions as a double pump"
• "pumps it to the lungs"
• "pumps it out to the rest of the body"
Why others are wrong: A (Inaccurate (kidneys/liver do this)), C (Inaccurate (heart pumps, doesn't store)), D (Inaccurate (brain/nerves do this)).