For what Ibaadath ALLAH himself will give the reward
D
Correct answer
Explanation
Saum (fasting) during Ramadan is unique among acts of worship because Allah Himself will directly reward the fasting person. While other acts like Salah (prayer), Zikr (remembrance), and Ikram (honoring guests) are rewarded, the hadith specifically states that fasting is 'for Me and I shall reward it' - indicating a special direct reward from Allah.