Answer:
The correct option is A.Homologous bone structures can be compared between groups of organisms.
Explanation:
Scientists can learn a great deal about evolution with fossils, they can compare their anatomy with the one in living species.
If two or more species share a unique physical feature, such as a complex bone structure, they may all have inherited this feature from a common ancestor. Physical features shared due to evolutionary history (common ancestor) are said to be homologous.