Why are plants and animals able to survive in the tundra?

Plants and animals have developed specific adaptations that allow them to survive the extreme climate of the tundra. These adaptations include thick fur, dense hair, retention of dead leaves, and feathered feet.

Explanation: hope it helps :)

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.