Answer:
A. It's managed by the state
Step-by-step explanation:
The US Constitution does not talk about education in its clauses, but the states have the rule over education for many reasons.
The United States its a really big country with vast states and different cultures, each location has unique requirements and capabilities. Each state is responsible for submitting their requisition for educational grants to the federal government so they are eligible for federal funding.
The states have better coordination of the local bodies that are responsible for educational grant execution and sanctions.