Question

Which best describes a development that improved railroad safety?
A. Railroads adopted standard time to coordinate schedules.
B. Railroads offered fold-down beds so that people could sleep more comfortably.
C. Companies standardized track technology so that they could use each other’s tracks.
D. Companies replaced hand-operated brakes with air brakes on trains.

Answer 1

maybe a or c but i might be wrong what do you think?

Answer 2

I thought it was B but i could be way off

Answer 3

me to

Answer 4

hope you get the answer

Answer 5

really need this point

Answer 6

I know it is either a or b

Answer 7

I was wrong It is not B