Which of the following is the best definition of a hypothesis?

a. an explanation of natural events that is well supported by scientific evidence
b. a set of rules for ethical conduct during an experiment
c. a statement that describes how natural events happen
d. a possible answer to a scientific question

c. is the correct answer

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.