Worth, worthy, useful, valuable, profitable, interesting, meaningful, praiseworthy, commendable, rewarding, desirable, laudable, advantageous, noteworthy, creditable, cost-effective, appropriate, notable, suitable, penalty, instrumental, purposeful, substantial.
It is the voters (the s at the end) everyone isn't a plural it is indefinite.
A paradox is a literary device that uses two opposing thoughts which may appear senseless, but turns out that it contains a kind of truth in it. A consonance is also a literary device by the repetition of consonant sounds within sentences, phrases or poems. From the given question above, the line that contains both paradox and consonance is option D: At least to know the worst is sweet.