How does the right to a grand jury protect the rights of the accused?

Question

Responses

It stops the government from trying a person for the same crime twice
It stops the government from trying a person for the same crime twice

It requires sufficient evidence before moving to trial in cases of serious crimes.
It requires sufficient evidence before moving to trial in cases of serious crimes.

It requires the appointment of a special prosecutor.
It requires the appointment of a special prosecutor.

It prevents one from self-incrimination

Answer 1

as the grand jury proceedings are secret and the accused is not present to testify. This protects the accused from being coerced or pressured into giving incriminating evidence against themselves.