Which topic or issue would be most appropriate for a four- to five-page research paper?
a. animal rights
b. medical testing on animals
c. when john muir started the sierra club
d. activism in the us

Complete the sentence. when trying to determine the meaning of an unfamiliar word, you should first replace the unfamiliar word with a synonym that you identified based on the context clues. remove the unfamiliar word from the sentence. think of an antonym for the unfamiliar word. look for context clues that indicate the word's meaning.