Constructive criticism is when you show someone their the faults or mistakes they have made in a project or at work or personal. you point out where they could improve there methods or workmanship could better manage their time give the advice without using personal cutdowns or picking at them personally . an examples 1you missed a spot right there while you were painting compared to hey ugly your a rotten painter.
You don't have the options, but i would say it means that books can take us to another place mentally and take us away from our problems. Hope it helps !:)
