Part a which statement best express the central idea of this article ?

Question 3 of 10 points which sentence is an example of chronological structure in "the city without o a. without daily pumping, manhattan's subway tunnels would be flooded o b. some time in the next 100,000 years, glaciers will cover all of manhattan o c. central park has a garden that houses plants mentioned in shakespeare's plays. o d. if flooding were to go unchecked, steel support beams in buildings would rust

Through actions and conflicts of force, the plot of novel is logically brought to the the turning point in the conflict

Could someone me with this question?