If you take out money from a cd before it reaches maturity you must

Pay the bank a penalty.

Explanation:

Certificates of deposit (CDs) can be a risk-free way to save money while getting more interest than a savings account. Customers can collect their money before the prescribed time, but penalties can be very high.

Federal law dictates a minimum penalty of seven days interest for early withdrawal on accounts called time deposits, but there´s no limit to maximum penalty fees.

the percentage of students at the school need special diets is

c) 10 percent