The best characterization of a Shi‘a follower of Islam from the options provided is:
practices the Five Pillars of Islam, believes the Koran is the holy book, believes only prophets can earn exalted status.
While it is true that Shi'a Muslims also practice the Five Pillars and believe in the Koran, a key distinction in some Shi'a beliefs includes the notion that exalted status can be reserved for prophets and specifically for the Imams, whom they recognize as divinely appointed leaders. The other responses either misrepresent the demographic facts or do not accurately reflect the theological tenets that are specific to Shi'a Islam.