Which sentence from the passage includes a subordinating conjunction? a.“Ads that tell a story are found most often in commercials, as a story relies on multiple images and a sequence of events.” (paragraph 7) b.“For example, one stain removal product proves to be superior to another by removing a seemingly impossible stain from a shirt.” (paragraph 6) c.“One common, and very persuasive, type of advertisement is known as the association ad.” (paragraph 2) d.“That's about how many advertisements you are exposed to in one day if you live in a metropolitan area.” (paragraph 1)

Coordinating conjunctions are those words that act as the glue in joining two phrases, verbs, nouns or adjectives. They also join two independent clauses that are of equal value or idea, connecting one to another.

In simple terms, the easiest way to understand and identify coordinating conjunctions is to remember them in the acronym FANBOYS- "for, and, nor, but, or, yet, so". They are the primary or main coordinating conjunctions used in sentences.

Therefore, the sentence that contains coordinating conjunction is sentence C. The coordinating conjunction "and" adds detail to the sentence, joining or adding the clause/ phrase "very persuasive" to the whole sentence.

Thus, the correct answer is option c.