News of the machine had spread to the villages, and people were starting to arrive. The traders spotted it from their stalls and packed up their things. The truckers left their vehicles along the roads. Everyone walked into the valley, and now gathered in its shadow. I recognized these faces. Some of these people had mocked me for months, and still they whispered, even laughed. More of them were coming. It was time.

What does this paragraph reveal about Kamkwamba?

He feels pride and is relaxed about the windmill.
He feels tense and hopes the windmill will work.
He feels great dislike for all of the villagers.
He feels destined to make the windmill.

Based on the paragraph, it can be inferred that Kamkwamba feels tense and hopes the windmill will work. The mention of him recognizing the faces of people who had mocked him suggests that there is some anticipation and pressure for the windmill to succeed.