the second bit is more formal, " You're six years old, aren't you?"
because, the other sounds very demanding or imperative, like as if you have to answer the question. so, it has to be the second line.
The role of a foil in a literary work to to provide contrast against the protagonist, in order to further highlight one or more characteristics of the protagonist.
I believe the answer would be C or A
Adjectives are descriptive words that describe other words and answer a question.
Thus, in your sentence, the adjective is the word red, as is tells the reader what color the shirt is.
If you accept either C or D as the correct revision then you have to accept both of them. Hence the best way to treat the sentence is to ignore both of them.
B is not correct either. You can over punctuate.
That leaves A.
Sometimes the right answer to many things is to do nothing. My dad used to say "Don't fix what isn't broke."
A is the answer <<<<<
