Which method is best for determining the meaning of an unfamiliar word: using context clues, using related words, or using a dictionary? why?

I would say context clue is the best if you are reading a passage or a text because it gives you the closest meaning of the word. Some words have more than one meaning, and in some cases, the meaning you know might not be the definition of the way it is used in the passage or text. For example, a minute can be seen like 30 minutes, and it can also be seen as minute: something that is small.

Hope this helps!!