Which of the following is an example of an adaptation?

A) Some birds use tools in order to help them reach their prey bidding tree trunks.
B) An organism inherited an allele for hemoglobin that makes it immune to malaria.
C) Giraffes want to reach the leaves on tall trees, so they develop longer neck.

The special characteristics that enable plants and animals to be successful in a particular environment are called adaptations. Camouflage, as in a toad's ability to blend in with its surroundings, is a common example of an adaptation. ... Adaptations afford the organism a better chance to survive in its surroundings.

Explanation:

it would be c. xylem.