The best question to ask about Tesla, the inventor is:
B) what did Nikola Tesla invent
-------------------------
The reference material would be:
A) a thesaurus
which is, by definition, "a book that lists words in groups of synonyms and related concepts".
-------------------------
About the paraphrase
A) You must break the original text down into individual sentences
meaning, you must do more than just copy or substitute a few words, but rather communicate the idea in a different way, preferably in a clearer way