If this is the Anh Do from the Little Refugee
then they would be
Khoa do - brother
Tram Do - sister
Tam do - father
Hien do - mother
"Contrast" means to be different, or to differ. The answer is D. However, because "however" is used when you start to talk about something different.
I hope this helps! :D
He thought she was made happy too easily. That her sweetness was a fault because she liked everything she saw and was contempt with anything. Something he saw as disgusting.