<span>B. a sarcastic voice
</span><span>The Black Sheep contains all of the following elements of satire except a sarcastic voice.</span>
To judge whether or not a conclusion is successful, simply look back in the story and try to relate things in the story with the conclusion. Depending on what you find will determine whether or not the conclusion is successful.
Based on the excerpt given above from "Yearbook", I can say that what we can conclude as readers based on the interaction between Martina and Fatima is that she is showing a friendly and welcoming attitude towards the new members of the yearbook club. And the answer would be the third option. Hope this helps.