The phases of the moon would have the BIGGEST impact on which of these? A) atmosphere B) hydrosphere C) lithosphere D) lunarsphere

Option B, hydrosphere, is the right answer.

Explanation:

The biggest impact of the phases of the moon is seen on the hydrosphere. It is because the phases of the earth cause high and low tides. The gravitational pull of the moon results in the tidal force. The gravity of the moon draws the ocean towards it while high-high tides. Due to this gravitational force, Earth and its water bulge out on the side nearest to the moon. Therefore, hydrosphere is the only sphere among the given options which is impacted the biggest by the phases of the moon.