What is the theme of this passage?

the sharp contrast between winter in england and winter in canada

the sharp contrast between spring in england and spring in canada

the effect that spring has on poets and young people in canada

the effect of the arrival of spring on love in canada

Ead this sentence from the evolution of useful things. the underlined phrases indicateaaking waterproof sandpaper would allow wet sanding, which in turn would cut down on dust, and thus be a greatmprovementpassing of timea directional change of positiona cause-and-effect relationshipsequence of events. save and exitmark this and retur