Concept:This phrase is from the Qur'an referring to the duty of the Quraysh to worship Allah alone.Explanation:The Arabic phrase "Fal'ya'budu Rabba hadhal Bayt" is translated word by word:• "Fal'ya'budu" means "let them worship" or "so let them serve."• "Rabba" means "Lord."• "hadhal Bayt" means "this House" (the Ka'bah).Combined, it means: "Let them worship the Lord of this House."This is the correct meaning that matches the intended message of the verse.Answer:B. let them worship the Lord of this house.