Which one provides direct and solid evidence in favour of organic evolution through ages?

State the modifications of forelimb in animals as an example of homology.

'Ontogeny Recapitulates Phylogeny' is narrated in which of the evidences for organic evolution?

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

Separate the following into homologous and analogous organs:
$I.$ Sweet potato
$II.$ Potato
$III.$ Flippers of penguins and dolphins
$IV.$ Hearts of different vertebrates
$V.$ Forelimbs of whales,bats,and cheetahs
The correct option is:

$A$: Blood group analysis shows that human beings are more closely related to apes than to monkeys.
$R$: The blood groups $A$ and $B$ are found in apes but not in monkeys.