The trooper had chased him down and tackled him to the floor just to talk? Boba's expression is openly skeptical. Still, so far the trooper's questions aren't anything Boba has reason to hide and so he answers:

"I touched the one that was next to me when I woke up. So I know why we're here."

It's said with a scowl. Boba isn't happy to have been kidnapped for what amounts to forced labor. Though it seems the Agrii might have a preference for bringing in those of his kind...

"How many other clones are here?" he asks. Never mind that he's the one being questioned; if he's been captured, he may as well see what information he can get himself.