Answer:
The correct answer is A. The common aspect of the religions of Judaism, Christianity and Islam is monotheism.
Step-by-step explanation:
Monotheism is the belief in the existence of only one god. The divinity, in monotheistic religions, is omnipotent, omniscient and omnipresent.
The main source of monotheism in the modern Western world is the narrative of the Hebrew Bible, the writing of Judaism. Abraham is the first of the Biblical Patriarchs and founder of the monotheism of the Hebrews.
Christianity emerged within Judaism as a small religious sect during the early centuries of the Christian Era, based on the belief that Israel's Promised Messiah would be Jesus.
Islam emerged in the 7th century as a reaction to Christianity and Judaism, based on both but with a version of monotheism based on Judaism. It regards Jesus as a prophet, but unlike Christianity, does not consider him as the son of God.