Answer:
A sound wave with 15,000 Hz
Explanation:
Humans can averagely hear up too 20,000 Hz. So around 15,000 would make most sense.
The believe that the best answer among the choices provided by the question is A. an underground water source.
Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.
D. <span>The mass produced by the photosynthesis reaction is used by the plant to fuel respiration and is turned into carbon dioxide, water, and energy.</span>
Oh yeahhh thanks for the points
