According to a recent article on movie theater box-office receipts,
ticket sales of the top 20 movies that were promoted most strongly accounts for nearly half of the $11.3 billion in movie-going spending in 2015, the rest of which came from ticket sales for the 759 smaller-budget movies that studios either did not promote or promoted relatively lightly.
A. strongly accounts for nearly half of the $11.3 billion in movie-going spending in 2015, the rest of which came
-> Incorrect because of SV agreement accounts is singular for plural subject ticket salesB. strongly were what accounted for nearly half of the $11.3 billion in movie-going spending in 2015; the rest coming
-> after semicolon the rest coming does not form a complete sentence, needed an IC which is missing, hence IncorrectC. strongly accounted for nearly half of the $11.3 billion in movie-going spending in 2015, the rest coming
-> Correct as we use comma instead of semicolon as in B. the rest coming is now an Absolute phrase - Noun + participle modifierD. strongly, accounting for nearly half of the $11.3 billion in movie-going spending in 2015, while the rest came
-> There is no verb for ticket sales as account has been replaced with modifier accounting - Hence IncorrectE. strongly, which accounted for nearly half of the $11.3 billion in movie-going spending in 2015, with the rest of it coming
-> which accounted again introduces a relative clause and hence Incorrect since ticket sales does not have a verb. Hence C