The innate responses that animals have in their system is called as reflex. This can be practiced to perfection depending on your preferred style - whether you want it for defense mechanisms, or even on activities that usually uses the mind. All living creatures have this mechanism. The answer should be B.
Answer:
#Genetic variations
#If a trait is advantageous and helps the individual survive and reproduce, the genetic variation is more likely to be passed to the next generation
Explanation:
#That is due to natural selection.
The central part of the body
