Answer:
A. fossils.
Explanation:
He compared fossils from each continent and realized that they have similar characteristics.
Hope it helps.
Biology examines the structure, function, growth, origin, evolution, and distribution of living things. It classifies and describes organisms, their functions, how species come into existence, and the interactions they have with each other and with the natural environment.
The answer would be "plant-like protists". These protists make their energy on sunlight. This would make them a protist and a plant-like cell.
Eukaryote because its apparently living organism
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.