Mammals are a large group of animals that includes humans, apes, dolphins, bears, bats, cats, and much more. which statement can be made about this information? all mammals use echolocation to find food. some mammals use echolocation to avoid obstacles. all mammals use walking as their primary means of transportation. some mammals need to find food to survive.

Given that humans, apes, bears and cats do not use echolocation, you cannot state that "all mammals use echolotation to find fodd".

Given that basts use echolocation to avoid obstacles, you can state that "some mammals use echolocation to avoid obstacles".

Given that dolphins swimm and bats fly, you are sure that it is not true that all mammals use walking as their primary means of trasportation.

It is true that some mammals need to find food to survive, but it is not related with the initial information.

The anwser is some mammles use echolocation to avoid obstacles