The correct answer is D. mob - move. The root is the basic part of a word which is used to create other words by adding prefixes and suffixes to it. Here, that tiniest part of the word immobilize is mob, which comes from Latin and means to move. By adding the prefix im- you created the negative form of the verb, and by adding the suffix -ilize, you created that particular verb.
Okonkwos suicide at the end of things fall apart is ironic because he spent his life trying to be seen as strong, but committed suicide. Suicide is looked on as weak in Okonkwos society
