People include varieties inside their heritable characteristics. A few varieties improve an individual fit to endure and replicate in their condition.
In the event that this proceeds over ages, these ideal adjustments (the heritable highlights that guide endurance and multiplication) will turn out to be increasingly more typical in the populace.
The populace won't just advance (change in its hereditary cosmetics and acquired characteristics), yet will develop so that it gets adjusted, or more qualified, to its condition.
The adjustments or changes in conduct, physiology, and structure of a life form to turn out to be increasingly fit to a domain. As per Charles Darwin's hypothesis of development by normal choice, living beings that have heritable characteristics that empower them to all the more likely adjust to their condition contrasted and different individuals from their species will be bound to endure, replicate, and give a greater amount of their qualities to the people to come.
Hence, the correct answer is "Individuals adapt their genes to improve survival".
