The answer is This is not plagiarism.
Plagiarism is to use someone else's text without attribution, whether intentional or not. In this case, the student cited the original source for his text, and the transcriptions used are quoted between quotation marks to indicate they were taken from the original text.
Dull: bland, boring
Brilliant: amazing, revolutionary
Doleful: sad, depressed
Vivid: clear, precise
Answer:
splendour, magnificence, impressiveness, glory, gloriousness, resplendence, splendidness, superbness, majesty, greatness
Explanation:
As of 2009, Sunni Muslims constituted 87–90% of the world's Muslim population-
the Shia believe that leader is called an imam and this "caliph/imam" should be a direct descendant of Mohammed-
and I have no clue on the last one
