What does an operating system do?

a. it keeps the computer from using application software.
b. it operates the mouse, but not the other hardware.
c. it tells the computer user how to operate the computer.
d. it allows the computer to start up and function.

Which maxim is being neglected in the following conversation? eli: how did you do at the track meet? caleb: i came in second place! eli: congratulations! what was your time? caleb: six minutes, four seconds. the guy who won only beat me by three seconds. eli: really? katie said the winning time was under 6 minutes. caleb: oh, well, he might have beat me by five seconds. a)maxim of quantity b)maxim of quality c)maxim of relevance d)maxim of manner