C. Character Development, would be my best answer out of the choices you've stated.
"Of" is a preposition in the phrase "Of studying" and "until" is another, as well as "to" in the phrase "to college" so there are 3 in that sentence.
Answer: The correct answer is option A.
Explanation: Senator Baker has given a prediction of how her opponents suggestion would be bad for the community and then draws a conclusion based off an option she feels would be more beneficial to the people.
