Which of the following is $NOT$ a living fossil?

Convergent evolution of two species is associated with

Divergent evolution is illustrated by which of the following?

Which vestigial structure develops in the embryos of all vertebrates,including humans?

Which one of the following is the correct example of homologous organs?

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: