Which one of the following is an apex advisory body that is non-statutory in nature?

The apex advisory body that is non-statutory in nature is the government policy think tank set up by an executive resolution.

The teacher education council is a statutory regulator created by an Act of Parliament, not a non-statutory advisory body.

The technical education council is likewise a statutory body established under its own Act.

The former medical council was a statutory regulator and not a non-statutory advisory body.

Being non-statutory, the policy think tank advises but does not derive powers from a specific law.

It replaced an earlier planning body and functions as the premier advisory institution for development.