Read the excerpt from Heart of a Samurai. The shape of the island—a tall, flat-topped mountain—became distinct. And yet not at all distinct. Its outline was blurred, as if the skin of the land quivered!

As they drifted closer, it appeared as if pieces of the island broke off and floated up into the air. Or black specks floated down and joined the land.

Which best states why the excerpt makes the reader want to keep reading?

to find out the shape of the island
to find out why the island has a flat top
to find out what is happening on the island
to find out who is looking at the island