The correct answer is A. Antonyms
Explanation:
A context clue refers to a clue about the meaning of an unknown word commonly provided by the words that surround the unknown word or are close to it. Additionally, the type of context clue provided by words can be of different types as other words can work as synonyms, as descriptions or even as antonyms.
In the case of the sentence "Although Amelia was quite lithe, her sister was clumsy and awkward" the unknown word is "lithe" and this is mainly explained by the conjunction "Although " and "her sister was clumsy and awkward" that shows the word "lithe" is the opposite of "clumsy" and "awkward" and indeed "lithe" means agile. Therefore, the type of context clue in this sentence is antonyms as the words "clumsy" and "awkward" suggest the meaning of "lithe" as they tell the reader these words are the opposite of the unknown word.
