Question

one additional atmosphere of pressure is added with every increase in depth of:
10 mm
10 m
5 m
50 m

Explanation:

Hydrostatic pressure increases with depth in a fluid. For water (the most common fluid in such contexts), an additional atmosphere of pressure (≈101325 Pa) is generated by a column of water approximately 10 meters deep, calculated using the hydrostatic pressure formula $P =
ho gh$, where $
ho$ is water density ($1000\ \text{kg/m}^3$), $g$ is gravitational acceleration ($9.8\ \text{m/s}^2$), and $h$ is depth.

Answer:

10 m