Question

using context clues is helpful when you do not have a(n) ______ nearby to look up the meaning of a word.
a atlas
b dictionary
c encyclopedia
d yearbook

Explanation:

A dictionary is used to look up word - meanings. An atlas shows maps, an encyclopedia gives general knowledge on various topics, and a yearbook records events of a particular year. When you need to find the meaning of a word, a dictionary is the appropriate tool.

Answer:

B. dictionary