Question

what is the interpretation of the amplitude in this application? the time between high tides the time between high tide and low tide the sum of the heights at high tide and low tide the distance halfway between the height at high tide and low tide

Explanation:

The amplitude of a periodic - like the tide - is defined as the maximum displacement from the equilibrium position. In the context of tides, it is the distance halfway between the height at high tide and low tide.

Answer:

the distance halfway between the height at high tide and low tide