Final answer:
Individuals with dementia like Alzheimer's disease face difficulty in short-term memory formation, which is characterized by the inability to remember recent events or information.
Step-by-step explanation:
Individuals with dementia, such as Alzheimer's or Wernicke's, may experience difficulty in C) Short-term memory formation. Symptoms of Alzheimer's disease include disruptive memory loss, confusion about time or place, and difficulty planning or executing tasks. Alzheimer's disease is characterized by a decline in cognitive functions, including significant issues with both short-term and long-term memory. However, early signs of Alzheimer's are usually associated with short-term memory problems, such as forgetting recent events or conversations, rather than long-term memories. Furthermore, Alzheimer's leads to the formation of amyloid plaques and neurofibrillary tangles in the brain, which contribute to the loss of neuronal synapses and cell death, further impairing memory formation.