$2.$ Safety checklists

A$.$

are too financially expensive for hospitals to administer.

B$.$

let doctors protect their$$ "near misses" from the prying eyes of hospital executives.

C$.$

are like a magical piece of paper that protects patients.

D$.$

are only used by airlines today.

E$.$

have been shown in one large study to reduce$$ post$-$surgical deaths.