Complete the ninja master's evaluation report by selecting the right phrase.

Out of all the trainees, Hiroshi crept through the laser maze _____, leaving without a single alarm going off.

The correct answer is most quietly.

The word describes how Hiroshi crept, so we need the adverb "quietly" rather than the adjective "quiet." Since Hiroshi is being compared to all the other trainees (a group of three or more), we must use the superlative form. For adverbs ending in -ly, we form the superlative by adding most before the adverb.