Which hepatitis virus is primarily transmitted through blood exposure?

Hepatitis C is primarily transmitted through blood exposure, making it the correct answer. This virus is often spread through direct contact with infected blood, such as through sharing needles or syringes during injection drug use, receiving blood transfusions from an infected donor, or being exposed to blood through certain medical procedures. While Hepatitis B and Hepatitis D can also be transmitted through blood, Hepatitis C has a notably higher rate of transmission in this manner compared to Hepatitis A, which is usually spread through fecal-oral routes, such as contaminated food or water, and not primarily through blood exposure. Thus, recognizing the mode of transmission is vital in understanding the spread and prevention of these viral infections.