The options of the given question are:
A) an obesity gene.
B) a genetic mutation.
C) an inherited condition.
D) an environmental factor.
Answer: An environmental factor.
Explanation:
The factor that is involved in this condition is environmental factor because for dogs it is mandatory to be involved in the physical activities.
The physical activity of dogs involves running, dancing, moving from one place to another.Just because Carlos was busy in the baseball practice activity because of which he was not able to get involved in the physical activity with the dog.
Whereas Miguel's dog was healthy and fit because he was not involved in any other activity and was playing and dancing with the dog.
This was an environmental factor due to which Carlos's dog was a bit heavy.
