B they became heroes after saving the children, so they did a good deed
In formal writing and communication, the sentence "Mom said she thought Maria had been treated wrongly and that she should stick up for herself." is more appropriate. Although wrong and wrongly are both adverbs, some writers consider using adverbial "wrong" as incorrect, so you might want to play it safe and use "wrongly" instead.
B) theses rude people
Hope this helped!
