The correct answer is option 4: Scurvy. Scurvy is a disease that can be caused by a deficiency of vitamin C. Vitamin C, also known as ascorbic acid, is an essential nutrient that plays a crucial role in the body`s ability to produce collagen, a protein that helps in the formation of connective tissues, such as skin, blood vessels, and bones.

When a person does not consume enough vitamin C through their diet, it can lead to a deficiency. This deficiency can manifest as symptoms such as weakness, fatigue, swollen and bleeding gums, joint pain, and poor wound healing. If left untreated, scurvy can progress to more severe symptoms like anemia, gum disease, and even death.

It is important to note that the other options listed, namely rickets, rabies, and hepatitis, are not caused by a deficiency of vitamin C. Rickets is a condition caused by a deficiency of vitamin D, which is involved in calcium absorption and bone development. Rabies is caused by a viral infection transmitted through animal bites, and hepatitis is an inflammation of the liver often caused by viral infections or excessive alcohol consumption.