Answer:
d) Age‐related cognitive decline
Step-by-step explanation:
Age‐related cognitive decline is a natural condition associated with several symptoms including mild memory loss, mild forgetfulness, difficulty to remember names, etc. These symptoms are irregular but generally do not affect normal functions. Mild cognitive impairment is a condition related to memory loss that can lead to severe cases of Alzheimer's disease. Decreased level of thyroid hormone is a mild condition that can be diagnosed and properly treated, which is not related to aging. Persistent urinary incontinence is a mild disease that affects normal life but can also be easily diagnosed and treated. Finally, aging is associated with an increased adipose‐to‐muscle ratio (instead of a decreased rate).