Question

choose the best idea to add to a summary of \adorable troublemakers.\ gray squirrels and raccoons are two animals that have become invasive. in england, invasive gray squirrels took over the ecosystem and nearly replaced native red squirrels. in japan, many people wanted pet racoons. when people brought home pet raccoons, the animals often ate food off their owners’ tables. when pet raccoons caused problems at home, pet owners released them into the wild.

Explanation:

To summarize "Adorable Troublemakers", we need a broad statement about the main subjects (invasive animals). The first option states gray squirrels and raccoons are invasive, which is a general and key idea for the summary. The other options are more specific details about one animal or a specific location/action, not as central to the overall summary of the topic about these "troublemakers" (invasive animals).

Answer:

A. Gray squirrels and raccoons are two animals that have become invasive.