Question

from the heart, deoxygenated blood travels to... the lungs to pick up carbon dioxide and drop off oxygen waste. the lungs to pick up oxygen and drop off carbon dioxide waste. the kidneys to drop off waste. the kidneys to pick up oxygen.

Explanation:

Deoxygenated blood from the heart goes to the lungs for gas - exchange. In the lungs, it picks up oxygen and releases carbon - dioxide waste. The kidneys are mainly for filtering waste from the blood and are not the destination for deoxygenated blood for gas - exchange purposes.

Answer:

the lungs to pick up oxygen and drop off carbon dioxide waste.