(Who, Whom) was the first president of the United States?

Read these lines from "an open boat" and answer the question. an open boat by alfred noyes see - quick - by that flash, where the bitter foam tosses,
 the cloud of white faces, in the black open boat,
 which of the end rhymes below matches the one in the last line of the excerpt? “he’s living, i know. but he’s numbed with the cold.” “and there are no voices or ghosts in that darkness.” “and wraps her loose hair round his breast and his throat.” “come. loosen your fingers. – o god, let me keep him! ”

What is the best way to combine these sentences?

(1) fire extended humans’ geographical boundaries by allowing them to travel into regions that were previously too cold to explore. (2) it also kept predators away, allowing early humans to sleep securely. (3) fire, in fact, has been a significant factor in human development and progress in many ways. (4) other obvious benefits of fire are its uses in cooking and in hunting. (5) probably even more important, however, is that learning to control fire allowed people to change the very rhythm of their lives. (6) before fire, the human daily cycle coincided with the rising and setting of the sun. (7) with fire, though, humans gained time to think and talk about the day’s events and to prepare strategies for coping with tomorrow. the sentence that expresses the main idea is: (type the number of the sentence. then click “go.”)