Step 1: Concept
Geriatrics is a medical specialty that focuses on the healthcare of older adults. It encompasses various aspects including psychological, social, economic, physiological, and medicinal problems faced by elderly individuals.
Step 2: Meaning
Geriatrics deals with the comprehensive care of aging populations, addressing their unique needs and challenges throughout the later stages of life.
Step 3: Analysis
Option A: Gerontology - This field studies the biological, psychological, and social aspects of aging but is not a medical specialty focused on treating elderly patients.
Option B: Oncology - This branch of medicine deals specifically with cancer and its treatments. It does not cover the broad spectrum of issues faced by older adults.
Option C: Geriatrics - This is the correct answer as it directly addresses the healthcare needs of elderly individuals, including psychological, social, economic, physiological, and medicinal problems.
Option D: Pediatrics - This field focuses on the health care of infants, children, and adolescents. It does not deal with the issues specific to older adults.
Step 4: Conclusion
The correct term that encompasses all the psychological, social, economic, physiological, and medicinal problems faced by elderly individuals is Geriatrics.
Final Answer: (C)