Final answer:
The need for a home modification is indicated by the presence of a seat and hand-held shower head in the bathtub.
Step-by-step explanation:
A home modification refers to making changes to a living space to accommodate the needs of older adults or individuals with disabilities. Based on the provided observations, the most relevant indication for a home modification would be option d: The bathtub has a seat and a hand-held shower head. This suggests that the client may have mobility issues and requires assistive equipment to safely use the bathroom.
While options a, b, and c may also require some safety considerations, they do not directly indicate the need for a home modification as option d does. Power strips with breakers and electric toaster ovens can be common household items, and rocking chairs are a matter of personal preference.
In conclusion, the presence of a seat and hand-held shower head in the bathtub suggests the need for a home modification to assist an older adult with mobility issues in safely using the bathroom.