Correct Answer: Vitamin C

Solution : The correct option is Vitamin C.

Bleeding of gums and loosening of teeth are often caused by a deficiency of vitamin C, also known as ascorbic acid. Vitamin C is essential for maintaining healthy gums and teeth. Its deficiency can lead to a condition called scurvy, which is characterized by weakened blood vessels, gum bleeding, and other oral health problems. Vitamin C plays a crucial role in collagen production, which is necessary for the strength and integrity of gum tissues and the overall health of the oral cavity.