Someone me (past tenses) or (words)

What does the word precocious mean in this sentence

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

Which activity is part of the prewriting process? aproofreading to correct grammatical errorsb. doing research for information about a topicc.rechecking the facts presented about a topicd.writing the first draft of the essay