Some people cannot imagine how anyone survived in a world without smartphones and ipods. the world before electronic devices, they imagine, must have been one long bore. yet people who spend every waking minute looking at a screen forget that the world somehow functioned quite fine without little devices in every hand and pocket. before the advent of apple, sometimes people would hold conversations with one another and sometimes you would find them not staring at a screen, but at an actual page in a real-life book.

which sentence best concludes this paragraph?
a) yet the development of electronic devices has indeed been a wonderful invention of modern times.
b) we are not solely dependent upon electronics to make it through the day, boredom can be conquered in many ways.
c) i haven't even mentioned how many people can be found playing with hand-held game devices like psp's and nintendo dsi's.
reactivate
d) people who have their ear-buds plugged in can't hear the world around them--not even if it's warning them of coming danger.