Aperson who studies word origins and meanings would most likely be a

A person who studies word origins and meanings would most likely be an etymologist. Hence the profession he is specializing from is called etymology. Etymology in definition is called a scientific study of words, its history, origin, morphology, structure and meaning. Words although, change through the course of time and by which society uses a certain phrase, word or mantra. Hence, etymology also studies that. It may also mean that word meanings can change because of the ascribed and due to certain occasions.

Show his work so he doesn’t get points taken off. this is because even if he can do calculations in his head, he may make a mistake and having it on the paper will not only him find mistakes but show that he was doing the work as well.