The similarity in different genotypes in organisms indicates which of the following?

Which of the following is the most evident source of evolution?

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$: Forelimbs of humans and bats are homologous.
Reason $R$: Forelimbs of humans and bats have similar anatomical structure.
In the light of the above statements, choose the most appropriate answer from the options given below:

The study of homologous structures in mature organisms provides evidence for the evolutionary relationships among certain groups of organisms. Which field of study includes this evidence of evolution?

Which of the following is an example of convergent evolution?

Give differences: Divergent Evolution and Convergent Evolution.