The answer would be B) the solution is at equilibrium.
The pH scale runs from 0-14. With 0 being acidic and 14 being basic. Then there’s 7 in the middle, which is neutral. Like the water we drink everyday has a pH of 7. Some acid examples include hydrochloric acid, or battery acid, or stomach acid, which has a low pH. Some base examples include soap, bleach, which has a high pH.