I would guess the answer is a diction?
Your welcome
As the early explorers began leaving Europe and discovering new lands they were filled with awe and excitement. These explorers had never seen such pristine landscapes, which appeared to be untouched. Nature had an important role in what was to become known as ‘The New World.’ The early explorers and settlers were greatly affected by nature both in positive and negative ways.Often as people traveled across ocean they fell ill from disease and famine, for the voyages were long and difficult. Many lost their lives as a result of the lack of food, fresh water and exposure, either during the voyage or soon after.
Answer:
B. If you come here when the moon is full, the legend goes you can see the ghost of an old sailor walking along the shore.
Explanation:
B is the correct answer, because the comma is basically directly there to add a pause to the sentence, between the cause and the effect.