Do you have a picture of the paragraph with the sentences..?
He fairness doctrine was a former US policy that required TV and radio broadcasters to present opposing viewpoints on any controversial topic that was important to the public. The abolition of this rule allowed one-sided networks to gain prominence. Now, nothing controls the amount of time given to opposing viewpoints. Networks can independently control this.
"meeting" in the sentence is a noun because it is a thing, more like an event. the definition of a noun is a person, place, or thing. hope this helps!
I think the answer is letter D. I hope I was able to help you out. Have a great day!