27%
Fill in the blanks as two friends try to figure out why their buddy is late for dinner.
"Leo is half an hour late. His phone is going straight to voicemail, so his battery _________________________ be completely dead.
Or, he _________________________ be stuck in that terrible construction traffic on 5th Avenue.
He _________________________ be at home sleeping, though. He texted me that he was leaving his house an hour ago!"
must
Phones going straight to voicemail is strong evidence, leading to the logical deduction that the battery must be dead.
might
Traffic is a reasonable guess, but they don't have proof, so might shows possibility.
can't
Since he texted that he was leaving an hour ago, it is logically impossible that he is still at home sleeping. Therefore, he can't be at home.