Question

Question was provided via image upload.

Explanation:

Analyze the question and find key details

The question asks for the effect of Dorsey pulling the lever only once. We need to locate this action in the text and trace its direct consequences using Reading Comprehension skills.

Locate the action in the excerpt

The text states that Dorsey "used his thumb to pull down the lever." It then notes his mistake: "he had forgotten to pull down the lever four times, a special signal that would have made it a true second alarm."

Trace the direct consequence

According to the text, because he pulled it only once instead of four times, Schaffer and Brown at the Courthouse assumed "it was simply another signal telling them about the original fire." Consequently, "they failed to call out more engines."

Match with the options

Using Text Evidence, we see that because of Dorsey's mistake, Schaffer and Brown did not realize a second alarm was being signaled. This directly matches the first option: "Schaffer and Brown did not realize there was a second alarm."

Answer:

• (A) Schaffer and Brown did not realize there was a second alarm. (Correct answer)
• (B) More engines were ordered to go to the scene of the fire.
• (C) The fire started spreading more quickly through the city.
• (D) Schaffer and Brown were sent a special signal.