What is the name of the family nanny works for

You are reading an informational text for english class, and you find a lot of words you don't know. your teacher says you don't need to look up all of them in the dictionary, only the ones you need to get the main point of the text. how could text features you figure out which words to look up?

The overwhelming majority of the peoples and nations of the world today want to live in peace

Imagination. experience. determination. trustworthiness.