The correct answer is (a) Scurvy.
Scurvy is a disease caused by a lack of vitamin C. It is characterized by weakness, fatigue, bleeding gums, and skin lesions. In severe cases, it can lead to death.
Vitamin C is a water-soluble vitamin that is essential for the growth and repair of tissues. It is also involved in the production of collagen, a protein that is found in skin, bones, and connective tissue.
Vitamin C is found in citrus fruits, tomatoes, broccoli, and other fruits and vegetables. It can also be obtained from supplements.
Beri-beri is a disease caused by a lack of vitamin B1. It is characterized by weakness, fatigue, and nerve damage. In severe cases, it can lead to heart failure and death.
Goitre is a condition caused by an enlargement of the thyroid gland. It is caused by a lack of iodine in the diet.
Night-blindness is a condition that makes it difficult to see in dim light. It is caused by a lack of vitamin A.
I hope this helps!