Concept:The Hilf al-Fudul (Alliance of Fudul) was a pre-Islamic pact formed to support justice and protect the weak.Explanation:The alliance of Fudul was established in Makkah.It aimed to defend the rights of the oppressed and ensure fair treatment for all.The alliance was not formed for distributing Zakat, defending the Ka'bah, or involving outsiders.Its main purpose was to stand by the oppressed against injustice.Answer:D. Protected the interest of the oppressed.