1. The group nearest the end or with the shortest stem of a phylogenetic tree has evolved most recently. In this case it is eutherians.
2. The group with the longest stem has been around the longest: fish
3. A direct common ancestor will share the same immediate line, like marsupials and eutherians. Fish and marsupials do not have a common direct ancestor.
Did you try the fact that the DNA sequences are copied
I think the answer is B. But don’t trust my answer.
Answer:
Maybe because you're feeling blue and the sky is a projection of your feelings.
Explanation: