Explanation: You can your knowledge about a topic by using it to study or do class work stuff.
The correct answer is A.
The author does not allude the visitor as being Herbert. He merely call it "the thing outside". Therefore, this is not a way the author creates suspense in the story.
The rest of the options: the description of the scraping, the echoes of the knocks, and the difficulty to find the object that was needed, are all elements that help build up suspense in this passage.
Young people have a better ability to initiate a positive change in their communities. They have better technology. They could use technology to grow and expand and build up their communities.
