Hi Which looks better pic 1 or pic 2

Which of these can an adverbial clause modify?

Dogs make wonderful pets because they us stay happy and healthy. the topic sentence is "dogs make wonderful pets." , is this correct? i keep doubting myself.

Which three elements of gothic literature clearly mirror the situation of women in the late nineteenth and early twentieth centuries? strange characters and settings an overall atmosphere of mystery and suspense unexplained or supernatural events characters’ inability to control their fates high emotions experienced by characters suffering from a sense of doom women threatened by powerful males