A. corre...

A correct, because “do” is a present simple tense auxiliary and must be used in all sentences in this case. B incorrect, because “do” is a present simple tense auxiliary for questions and negative sentences only. C incorrect, because “does” is the appropriate present simple tense auxiliary in this case. D correct, because in this case both “do” and “does” can be used. E correct, because it adds emphasis to the imperative command “give her a chance”.