Final answer:
The correct answer is to order groceries online or through a catalog, as this alters the task object to accommodate for the client's impaired mobility, allowing them to shop for groceries without physical ambulation.
Step-by-step explanation:
The question asks for an example of how to alter the task object to compensate for impaired mobility and ambulation to allow a client to shop for groceries. The appropriate answer here is option 1) Order groceries online or through a catalog. This solution directly modifies the task of shopping by changing the method in which the groceries are acquired, thereby accommodating the client's impaired mobility without the need for physical ambulation in a grocery store. Options 2) and 3) are not alterations of the task object itself but are aids that assist the client in performing the task in its traditional form. Option 4) is a parking accommodation and does not deal with the shopping task itself.