As he listened to the haunting notes of the song the author realized he had found the inspiration for his next suspense novel.

The teacher reviewing this sentence would point out that since this is a
a complex sentence, there should be a comma after “song.”
b compound sentence, there should be a comma after “realized.”
c complex sentence, there should be a comma after “inspiration.”
d compound sentence, there should be a comma after “found.”

Question

As he listened to the haunting notes of the song the author realized he had found the inspiration for his next suspense novel.

The teacher reviewing this sentence would point out that since this is a 
a complex sentence, there should be a comma after “song.” 
b compound sentence, there should be a comma after “realized.” 
c complex sentence, there should be a comma after “inspiration.” 
d compound sentence, there should be a comma after “found.”

ElectricImpurity · Answer

A compound sentence is a sentence with more than one subject, while a complex sentence is a sentence with one independent clause and bare minimum one subordinate clause. First, try to identify what type of sentence this is, then figure out where the comma should go based on that.