What is a change that improves a species' chance of survival?

A. Variation

B. Adaptation

C. Genetics

D. Phenotype

It should be adaption, because it means the species change themselves as the environment changes to make them survive. a simple example is cactus, like you know the ones in the desert. they have needle shaped leaves to adapt the dry and hot environment, reduce the loss of water during transpiration.

B adapatation

100% sure