Final answer:
Statement c. 'The primary goal of treatment is to slow the progression.' is an indication that the family understands the teaching about Alzheimer's disease.
Step-by-step explanation:
The nurse should identify statement c. 'The primary goal of treatment is to slow the progression.' as an indication that the family understands the teaching about Alzheimer's disease. This statement accurately reflects the goal of current treatments for Alzheimer's disease, which focus on managing symptoms and slowing the progression of the disease. While there is no cure for Alzheimer's disease, medications such as cholinesterase inhibitors can help to slow down the advancement of the disease and prolong brain function. It is important for the family to understand that the goal of treatment is not to cure the disease but to improve the quality of life and delay the decline caused by the disease.