Determining whether sufficient evidence is available to justify a trial a. is the responsibility of a grand jury. b. is "one of the most recent institutions embedded in the Constitution." c. is left up to prosecutors alone. d. follows the same constitutional rules at both the state and federal levels.

a. Is the responsibility of a grand jury.

Explanation:

A grand jury is the group of people selected by the court to act as jurors in helping them solve a court case and represent the point of view of the third party, that of the citizens. This group of jurors are responsible for the unbiased resolution, and are kept under strict 'rules' and even prevented from talking about the case to anyone outside of the jurors or court officials involved in the case.

The jurors are to help solve the crime/ case by listening to both sides of the argument, from the defendants and the plaintiffs. They also have the right to call forth any witness, conduct investigation, and determine whether the accused be indicted. They are also responsible for determining whether there is any sufficient evidence presented that can justify a trial.

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