Scientists are investigating how well different microphones capture and record sounds. They use tools that show how loud the high and low sounds are and a tool that shows how much noise is recorded along with the actual sounds.Which is a scientific question that could be included in this investigation?

The investigation measures how loudly microphones capture high and low sounds, so a question should focus on a sound level that can be measured. Choice A asks which microphone captures a singer’s low sounds the loudest, which can be tested with those tools. Choice B asks for a subjective judgment about what sounds best, and choice D asks about singers’ preferences.

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