Answer :
Answer:
The answer is B.
Explanation:
The reason for this is because, they're arms, fins, and wings all have the same finger bones which lead to a/an common ancestor.

Homologous are the structures that have a similar structural organisation while different functions.
The similarity in the structure of the bones suggests:
Option B. these species share a common ancestor
This can be explained as:
- The structural similarity shows that the organism inherited those traits from a common ancestor.
- The function of the structures varies in the descendants.
- The bone structures of animals show a similar basic pattern of bone arrangement.
Therefore, the animals share a common ancestor.
To learn more about homologous and analogous structures follow the link:
https://brainly.com/question/8405772