Question

The map shows the distribution of wild boars in the United States (shaded area).Which of these facts about wild boars is best supported by the evidence provided?
Wild boars were brought to the United States by humans.
Wild boars have quickly spread through the United States.
Wild boars have established successfully mostly in areas with warm climates.
Wild boars have a high reproductive rate and no natural predators.

Answer 1

Wild boars have established successfully mostly in areas with warm climates.

Explanation: the shaded areas on the map are concentrated in the southern and warmer parts of the United States. The map alone does not show how they arrived, how fast they spread, or details about reproduction and predators.