Anyone know what the answer is only answer if you are sure

Based on your knowledge of word parts what does the word intervene mean

Which sentence uses all its nominative case pronouns correctly? a we live on the same street b them and rachel are good skaters. c the redskins fans in the family are fred and me d have joanne and him played tennis together before?

When you wear your earbuds while working out, your sweat damages them and they die sooner