Every person who unlawfully obstructs the navigation of any navigable waters is guilty of a misdemeanor.

Which reference source would be BEST to use to find the root word for navigable found in Section 131 of the document?

A)

dictionary

B)

encyclopedia

C)

textbook

Eliminate

D)

thesaurus

A

Explanation:

A dictionary would be the best type of source to use when looking for the root work of navigable. Dictionaries customarily give the definition of a word, its pronunciation, an example of the use of the word in a sentence, and the origin of the word.

An encyclopedia would be more appropriate to define shipping, and a textbook would likely say very little about the origins of a word and would instead use it in the context of the textbook's content.