SARA MUST HAVE BEEN SLEEPING; OTHERWISE, SHE WOULD HAVE HEARD THE...

42. Sara must have been sleeping; otherwise, she would have heard the window break.

A.

If she had been sleeping, Sara would have missed the sound of the breaking window.

B.

The window broke while Sara was about to fall asleep, but she wasn’t aware of it.

C.

Sara was sleeping so deeply that she wouldn’t even have heard a window breaking.

D.

I’m pretty sure that Sara was asleep at the time, because she didn’t hear the window smash.