Answer- C. 72 hoursAccording to 'DELHI ANATOMY ACT 1957', a person died in road traffic accident the dead body is said to be unclaimed after 72 hours.According to Delhi Anatomy Act 1953, the hospital authority can utilize an unclaimed body (a person who dies in hospital, prison or public places, which has not been claimed by any of his near relatives or personal friends within the prescribed timeline of 48 hours) for the purpose of conducting anatomical examination and dissection or other similar purpose.