Answer:
C. The spelling bee contender flashed a self-possessed smile as the final word was announced.
Explanation:
You have not pointed out which words are underlined, but either way, we can see that sentence C is the only one that contains a word that is used incorrectly. This word is <em>self-possessed</em>. A smile can't be self-possessed. This adjective is used to describe a person - someone who is self-possessed is calm, confident, and in control of their emotions.
Both of the above because is necessary to have the two of them and you cannot have any of Thônes
Yes, unless you're writing it. In that case you would just underline it.
The water will cling round your feet and babble its secret
D because if u switch that phrase in for "blaze" the sentence still makes sense