Explanation:

1 only

It makes all the fundamental rights effective: This statement is correct. The Right to Constitutional Remedies (Article 32) empowers individuals to move the Supreme Court for the enforcement of their fundamental rights. It ensures that all fundamental rights are not merely paper rights but can be directly enforced through the judicial process.

Fundamental Rights violated only by the government can be entertained by Courts: This statement is incorrect. Fundamental rights can be violated not only by the government but also by private individuals or entities. The courts can entertain petitions related to violations of fundamental rights by any entity, not just the government.

In case of grave violation of fundamental rights, the concerned State High Court is always bound to admit such petitions: This statement is not accurate. While the High Courts have the authority to entertain petitions related to the violation of fundamental rights, they are not always bound to admit every petition. The admissibility of a petition depends on various factors, and the High Courts have the discretion to decide whether to admit a particular case.