Which device does the poet use by ending every second and fourth line with the simular-sounding words?

How can i use "as william walking with his wife was seen" as a short sentense

(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.”)

Before odysseus talks about the lotus-eaters and the cyclops, what other events does he refer to? a. the advances of suitors that his wife penelope must fend off b. the attack by poseidon on his ship c. the attack and raid on the land of the cicones d. the nights he spent inside the trojan horse