Secondary school falls between

a. kindergarten & elementary

b. elementary school & post secondary school

c. post secondary school & higher education

d. middle school & high school

B. Elementary school and post-secondary school

Explanation:

The stages of education are the following:

Kindergarten, elementary school, secondary school, post-secondary school.

The definitions of elementary and secondary school vary from country to country. For example, in the US, there are elementary, middle and high schools (3 stages), while in some other countries there are only elementary and secondary schools (2 stages). Post-secondary education follows the secondary and usually refers to college or university.

Answer: B