Final answer:
Individuals with Alzheimer's disease face severe language impairment during the disease's late stages, which can lead to muteness and unawareness of being addressed.
Step-by-step explanation:
During the severe stage of Alzheimer’s disease (AD), individuals may experience significant language impairment, which includes problems with grammar, becoming mute, and being unaware of being addressed. This stage of the disease is characterized by extensive damage to the brain, which affects critical areas involved in language, cognition, and executive function.
The decrease in the ability to communicate during the severe stage of AD is part of a broader decline in cognitive abilities. Patients in this advanced stage of Alzheimer’s typically cannot recognize family members, cannot communicate effectively, and are fully dependent on others for their care. They may also lose the ability to control basic functions such as bladder and bowel control, and proper swallowing.