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you can use the word-skipping technique when you:
a. understand the main idea of a passage without stopping to look up unfamiliar words.
b. don’t have time to look up a word in the dictionary.
c. no the part of speech of the word but not its definition.
d. can’t find any useful context clues in the paragraph with an unfamiliar word.

(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.”)

The missionaries who appear in the novel are colonists from a) britain b) portugal c) spain d) italy

What about the sentence structure in this passage build suspense