Answer: misused pronoun: me. Correct pronoun: I.
Explanation: Pronouns have three possible cases: subjective, possessive and objective. The subjective case is used when the pronoun is the subject of the sentence (they are: I, you, she/he/it, they, we). The objective case is used when the pronoun acts as an object in the sentence (they are: me, her, them, us, etc). The possessive case is used to indicate ownership (they are mine, yours, his, hers, its, ours, and theirs). In the given sentence, the pronoun is in the subject of the sentence, therefore it should be in the subjective case: After school, Bob and I cleaned up their yard.
I'd choose this dialogue to revise your sentence:
<span>“Did you hear?” I asked them. “My painting got selected! Exciting, right?” I smiled. “Especially given that I felt so incompetent at the beginning and that the competition was ruthless!”
</span>
It feels like the option that best uses the dialogue to improve this sentence, because the other options are either too informal or just the same sentence as the original one.
You shouldn't know what an oiji board is at your age....