Points to keep in mind:
Adjectives can only describe nouns.
An adverb should be used to describe a verb.
A. The Yazidi religion, containing elements of Zoroastrianism, Judaism, Christianity and Islam, is rooted
predominant in Kurdish culture,
its largest community of followers sporadically occupying northern Iraq.................
Predominant is an adjective describing the verb rooted & pronoun ambiguity. WRONG. B. The Yazidi religion, containing elements of Zoroastrianism, Judaism, Christianity, and Islam, is rooted predominantly in Kurdish culture, and its largest community of followers sporadically occupies northern Iraq...................
Seems fineC. Containing elements of Zoroastrianism, Judaism, Christianity and Islam, the Yazidi religion is rooted predominantly in Kurdish cultural,
its largest community of followers sporadically occupying northern Iraq.................
Pronoun ambiguityD. The Yazidi religion, its largest community of followers sporadically occupying northern Iraq, contains elements of Zoroastrianism, Judaism, Christianity
as well as Islam, and is rooted predominantly in Kurdish culture...................
wordy sentenceE. Containing elements of Zoroastrianism, Judaism, Christianity and Islam, the Yazidi religion is rooted predominantly in Kurdish culture,
its largest community of followers
sporadic occupying northern Iraq.......................
pronoun ambiguity+adjective sporadic describing verb occupyingOA should be B