"Think about Brutus’s actions up to this point in the play. Is joining the conspiracy against Caesar the right decision for him to make? Has he made this decision for the right reasons? Has he 'chosen' to join the conspiracy, or has he been 'tricked' by Cassius? How do Cassius’s motivations compare to Brutus’s? Are they more noble or less noble?" ONE PARAGRAPH NO EVIDENCE NEEDED ONLY EXPLINATION

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 correct answer is:

this is an example of the writer telling through description rather than showing through dialogue.

sometimes writers like to explain explicitely what's happening instead of adding dialogues of the situations., which is the case in this passage,

d is the best answer for this question.