eah walked over to the far corner of the yard and looked around carefully. Her brother Jim followed. They were behind a hill next to a big, spiky apple tree.

"I think we should build our fort here," Leah said.
"Yeah, no one will see it over here. But what is that?" Jim asked, pointing at a small door in the hillside.
Leah and Jim drifted toward the door.
Based on the passage, which is more likely to happen next?

a: Leah and Jim checked out the door
b:Leah and Jim climb the apple tree

a: Leah and Jim checked out the door