Final answer:
The correct answer is approximately 15% of Earth's land is considered arable, suitable for growing crops. While agriculture occupies more land, only a portion is arable.
Step-by-step explanation:
Approximately what percentage of the Earth's land is considered arable? The answer is B. 15%. Arable land is land suitable for growing crops. Despite the fact that agriculture occupies about 40 percent of Earth's ice-free land mass, not all of this land is arable; some is used for grazing livestock, and some may be fertile but not in agricultural use. It is also important to note that the distribution of agricultural land has been changing, with temperate regions losing agricultural land to other uses, while tropical regions experience an expansion, often through deforestation.