It won’t let me post my answer, so in the comment “section” under this, I’ll copy and paste what I tried to say
D: the author debates a topic and urges readers to accept a certain point of view
More vitamin A should be the correct answer.
Subject is a noun, meaning a person, place or thing.
The subject gives us the focus point of the sentence.
In a simple subject there is one noun completing the action of the sentence.
