Let's match the vitamin deficiencies with their corresponding health problems: - A. Vitamin A deficiency leads to night blindness (II) and can progress to more severe eye problems. - B. Vitamin B1 (Thiamine) deficiency causes Beriberi (I), affecting the nervous system, cardiovascular system, and digestive system. - C. Vitamin D deficiency causes Rickets (IV) in children, a condition characterized by softening and weakening of bones, and Osteomalacia in adults. - D. Vitamin C (Ascorbic acid) deficiency causes Scurvy (III), characterized by fatigue, gum disease, skin problems, and poor wound healing.