<em>Hello-</em>
<em>I'm thinking it's C, and I'll explain - don't worry.</em>
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<em>Active voice is when the subject performs something on an object. For example:</em>
<em>"Sam ate the cookie."</em>
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<em>If you wanted to rewrite the sentence above to be passive, it would look more like this:</em>
<em>"The cookie was eaten by Sam."</em>
<em>The passive voice is telling us what is being done to the object.</em>
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<em>All the other options are akin to the active voice, but the sentence "After the walk, the pizza was eaten quickly by Sufyan" more closely resembles the passive example. So I have reason to believe that C is the correct answer.</em>
<em>I hope this answers your question.</em>
<em>-Toremi</em>
