Look at this chart about "Revolution 2137.” Read the excerpt from "Revolution 2137.”

Lena and Meg spent about ten minutes searching for information, and then agreed to meet on every rainy day until they had worked out a perfect plan. Months went by. Then, one day, when they had finally worked out all of the details, Meg asked, "But how will we survive without power?”

"I guess we’ll have to look that up, too,” Lena answered. "Maybe we can find some books about life in the 1800s.”

Meg grabbed a book about pioneers and exclaimed, "Look at this—they cooked over a real fire!”

"I’ve never even seen a real fire,” Lena said. "I wonder how you make one.”

"I guess we need to do some more planning,” said Meg.

This excerpt is part of the story’s

a)exposition.
b)rising action.
c)climax.
d)falling action.