First of all, you need to know what a comma splice is. A comma splice, also known as a run-on sentence, means that two or more sentences are mixed into one large sentence but with improper punctuation. So, a comma is inserted where a period should be to separate two or more unrelated sentences. Having this in mind, the correct answer is C. <span>As I sat on a bench and drank my coffee, a seagull passed over, he relieved himself on my head. There should be a period between the words 'over' and 'he.' </span>