[Monty has no earthly idea what kind of test. He's a stockbroker and a washerwoman's son, not a scientist. Rather than mentioning any of that, the young man puts on an air of deep consideration. Oh, how the earl does ponder! As he... furiously tries to think of anything.]

Reflexes? [It's said uncertainly, then with more conviction as he draws himself up, trying to look and sound confident.] Yes, our reflexes to respond to a threat. And the furniture moving about might simply be a test of our observational skills after being deprived from what sleep there is to be had here. Perhaps she'd like to adjust these... MNs in our blood accordingly if our reaction times and senses have been dulling beyond what they should.