ANATOMY

Detailed explanation-1: -An adaptation is any heritable trait that helps an organism, such as a plant or animal, survive and reproduce in its environment.

Detailed explanation-2: -Acquired traits are traits gained by an individual as a result of his interaction with the environment. These traits do not change the genetic make-up of an organism and hence are not carried down by heredity.

Detailed explanation-3: -So, the correct answer is ‘An adaptation’

Detailed explanation-4: -According to Charles Darwin’s theory of evolution by natural selection, organisms that possess heritable traits that enable them to better adapt to their environment compared with other members of their species will be more likely to survive, reproduce, and pass more of their genes on to the next generation.

Detailed explanation-5: -It can also be described as a physical or genetic advantage that aids aides an organism to be better adjusted to survive in their environment.