Question

what ecosystem is preferable for the polar bear?
grasslands
arctic tundra
rain forests
deserts

Explanation:

Polar bears are adapted to cold, icy environments. Grasslands are for grass - adapted species, rain forests are tropical and humid, deserts are arid. Arctic Tundra has the cold, icy conditions (with sea ice for hunting seals) that polar bears need.

Answer:

B. Arctic Tundra (assuming the option for Arctic Tundra is labeled as B; if the original labeling was different, adjust the identifier. But based on the options, the correct one is Arctic Tundra)