Reread paragraph 3. Which persuasive technique is used in this paragraph ?

this is b. how railways dealt with people riding the trains without paying

im gonna take a guess and say gas vans and chambers

uncanny would be like unlucky or disaster. you can look for more in the dictionary or if you have text book then turn to a. 17 but it's different with textbooks.

answer is b,

"the tracer looks harmless in flight, but the pilot’s bitten lips and white knuckles suggest how dangerous it can be."

it was correct.