Which of these statements is correct about the theory of natural selection?

it was accepted after evidences were proved non-testable.

it was proposed after several science magazines published it.

it was proved after scientists showed that its results are non-observable.

it was validated after scientists completed several investigations to gather evidence.

It was validated after scientists completed several investigations to gather evidence.

 The natural selection process ensures that the weak members or traits of organisms are removed so that only the strong will remain. This ensures that the organisms and their descendants will live for as long as possible. This is the process by which organisms evolve to allow for higher survival rates. For example, an animal that is covered by thick and multiple layers of fur is made for the extremely cold climates. However, if the world begins to get warmer and warmer, such animals and their offspring will begin to have thinner and thinner layers of fur. This will allow their specie to survive longer.