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.
He geography of Canada describes the geographic features of Canada, the world's second largest country in total area.<span> </span>
Islam, Christianity, Hinduism and animism
Answer: In Medieval Europe, knights pledged loyalty to vassals, who in turn pledged theirs to powerful lords, and serfs labored in the fields.
Explanation:
A rigid hierarchy refers to one where people who are born into a certain position in life, find it quite hard to move from it or rather one where there are different social classes and people had to be classified in one class for the system to work.
The system during medieval times was much like this. Social classes existed that determined a person's worth in society such as the knights, vassals, Lords and Royals. There was also the serfs who were considered the lowest in the hierarchy.
