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You can actually use many words to describe a work of art which is of the highest quality. I'll prefer to use the word - <u>'Magnum Opus'</u> which in modern use is used to refer to a creation that has been given much critical praise, especially one that is considered the greatest work of a person's career or to a work of outstanding creativity, skill or profundity,.
I’d say all because every one makes sense except the first or it’s 3
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B. Changing passwords frequently makes you likely to forget which isn't helpful, using a personal e-mail address is unprofessional, only limiting the number of people and keeping it down to just enough people who need to see it can see it is truly helpful.