The correct answer is - d. spring.
The unusually high tide is called spring tide.
This tide is higher than the average tide, and much higher than the tide in the period when it is the lowest.
The spring tide always appears after a new moon or a full moon, which is a clear indicator what influences it. The higher a tide is, the bigger the influence on the water bodies by the Moon's gravitational pull, and vice versa.This tide is actually the biggest difference between the high tide and the low tide.
"The lithosphere is subdivided into tectonic plates. The upper part of the lithosphere which chemically reacts to the atmosphere, hydrosphere and biosphere through the soil forming process is called the pedosphere. The lithosphere is underlain by the athenosphere which is the weaker, hotter, deeper part of the upper mantle."
Bigger pieces of sediment are usually deposited first then the little pieces then fill in the spaces between.
