Pair 1: Vitamin C deficiency causes Scurvy, a disease characterized by weakness, anemia, bruising, bleeding gums, and loose teeth. This pair is correctly matched. Pair 2: Vitamin D deficiency causes Rickets in children, a condition characterized by soft and weak bones, leading to skeletal deformities. In adults, it causes Osteomalacia. This pair is correctly matched. Pair 3: Vitamin E deficiency is rare and can lead to nerve and muscle damage, loss of body movement control, muscle weakness, and vision problems. Night blindness (Nyctalopia) is caused by Vitamin A deficiency, which affects the ability to see in low light conditions. This pair is incorrectly matched.