The correct answer would be B. It makes the sentence clear and concise.
If I am elected as the {Insert School Name Here} Sports Minister, one of my main priorities will be making sure that everyone at our school is interested in our programs and what we are doing, leading everyone to be more invested in the state and well-being of our school, qualities that all students should feel inclined to exhibit. Secondly, ensuring that no on is ignorant to their peers and how they feel. It's hard to make a school as good as it can be without helping everyone to feel welcome and seen at school. As Sports Minister, even when it doesn't relate to physical activity, I will be sure to prioritize the mental health and wellness of my classmates. Finally, as expected of Sports Minister, I will do my best to encourage all of our students to be active and energetic while at school. Thank you for offering me the opportunity to apply for this role!
(Not sure if this is quite what you were looking for, but I hope it works out! Good luck!)
Answer:
It is an indefinite pronoun