Final answer:
The best accomplishment following résumé writing guidelines is coordinating school's student-body elections and reducing ballot processing time by 30%.
Step-by-step explanation:
The statement that best describes a person's accomplishments following the résumé writing guidelines is:
- Coordinated school's student-body elections and reduced final ballot processing time by 30%.
By highlighting this accomplishment on a résumé, it demonstrates the candidate's ability to take on responsibilities, manage projects, and achieve tangible results. This statement showcases strong leadership skills and the ability to make a measurable impact.