Klonoa nods, and then tilts his head thoughtfully.

"Well, people had to go through here at one point, right? And, if they did, they probably had to step over the pressure plates."

He says, walking over to the left door and peering down at the plate.

"It's a lot easier to accidentally trip a pressure plate than pull a lever. I bet the pressure plates are important in the solution. Might as well try pressing them."