Answer: d. SCHOOL VOUCHER
Explanation:
SCHOOL VOUCHER
A School voucher, which is also known as an education voucher is a certificate of funding given by the government for a student studying at a school of their parent's choice. It is usually valid for a term or semester and may even be used to pay for home schooling expenses.
A 2006 survey of members of American Economic Association showed that over two thirds of economists believe that giving the vouchers to parents with low incomes can make a great impact.