What is the best definition of an adaptive trait?

Any feature an animal is born with.

A feature that helps an organism survive.

A feature that makes an animal look different from others.

A feature that only appears when the environment changes.

A population of light-colored moths lives on light-colored trees. If pollution causes the trees to become dark, what will likely happen to the moths' color trait?

The moths will immediately change their color.

The light color will become non-adaptive.

The tree color will not affect the moths.

The light color will become more adaptive.

The organism has too many offspring.

The organism's predators disappear.

becomes more helpful for hunting.

An organism's traits are fixed and never change in value.

A trait's usefulness depends on the environment.

The environment changes to match an organism's traits.

All traits are equally useful in every environment.