The words in the sentence that provide a context clue for the meaning of the prefix auto- as it is used in the word autonomy are "their own"
Explanation:
The word auto comes from the Greek and its meaning is "self". Then this shows that both expressions "autonomy" and "their own" have the same meaning autonomy is to make the thing without the assistance or influence of anyone or anybody, the same case with the expression their own which expresses independence.
