Concept: An aged Muslim who is unable to fast due to old age is allowed to give a compensation instead.Explanation: In Islam, elderly people who cannot physically observe the Ramadan fast are exempted from fasting.As a substitute, they must pay fidyah, which means feeding an indigent person for each missed fast.This rule is based on the Qur'anic concession for those who are unable to fast permanently.Options A, B, and C are not the required compensation for missed Ramadan fasts.Answer: D. Feeding an indigent