Which of the following best relates behavior and evolution

The organism enables itself to adapt to the environment's harsh conditions. 

Adaptation is the unique trait that animals and plants have in order to survive through the evolution of time. Some animals that live in cold ranges around the world are an example of this adaptive trait. Alpine animals that are found in mountain ranges are exposed to the very cold temperature and the ultraviolet wavelengths of the sun. Most alpine animals have extra layers of fat and fur to protect them from the harsh environment. They also have shorter limbs (e.g. legs, ears, tail) to prevent heat loss. 

Very minute and important evidence needs to be collected in order together detail and figure out what had happened