C if that’s wrong I don’t know :)
Sentence b does not use an adverb clause
Rethorical devices are all those which helps an individual to argue successfully, defending his point of view but also convincing people to agree with his saying. That is why rethorical devices can help a student: he can explain himself better, defend his ideas and even convince others to do what he believes to be the best.
The correct answer is A because it relates to culture
