Final answer:
It is useful to treat the family dog for fleas at the same time as the residence to reduce the possibility of re-infestation, as untreated pets can act as hosts for flea reproduction and spread. The correct option is C. Reduces possibility of re-infestation
Step-by-step explanation:
The reason it would be useful to treat the family dog at the same time the residence is being treated for fleas is C. Reduces possibility of re-infestation. Fleas can infest both animals and the environments they live in.
If only the residence is treated, without addressing the fleas on the family dog, the dog can continue to act as a host, perpetuating the life cycle of the fleas and leading to a quick re-infestation of the environment. Treating both simultaneously interrupts this cycle, ensuring that the fleas do not have a living host to continue breeding and spreading.
Treating the family dog at the same time the residence is being treated for fleas is useful for several reasons:
In order to start at the source: Treating the dog helps eliminate fleas that may be living on the dog and acting as a source of infestation in the house.
Reduces the possibility of re-infestation: If only the house is treated and not the dog, there is a chance that the dog could bring in new fleas and re-infest the premises.
For precautionary reasons: Treating the dog simultaneously ensures that all potential sources of fleas are addressed, reducing the risk of flea bites and infestation for both humans and the dog.
The correct option is C. Reduces possibility of re-infestation