the grand jury conducted the inquiry. a tribute b challenge c election d investigation

the grand jury conducted the inquiry. a tribute b challenge c election d investigation
Answer
Brief Explanations:
The word "inquiry" means a seeking for truth, information, or knowledge through questioning. "Investigation" also implies a systematic search for information or truth, especially in a formal or official context like a grand - jury proceeding. "Tribute" is an act, statement, or gift that is intended to show gratitude, respect, or admiration. "Challenge" is a call to engage in a fight, competition, or to question something. "Election" is a formal process of selecting a person for public office or other position by voting.
Answer:
D. investigation