Who does most of the picking up in the family

the correct answer can either be a or b because it could be both but you should probally choose b

the underlined phrase is an example of : understatment

voracity is the noun corresponding to the adjective voracious, which means (1) eager to consume a great amount of food, or (2) marked by an insatiable appetite. veracity is far more common than the rare voracity, so the latter is sometimes used in place of the former.