When issues are posed as questions that require solutions to a problem as an answer, it is often desirable to reword the question to look for alternative solutions and thus identify multiple conclusions?

Which sentence is correctly punctuated? a. i haven’t found a new job, and i don’t plan to look for one until i have to. b. my work is piling up—day to day—and i can’t seem to get caught up. c. i know things could be worse (they have been in the past).