Answer :
the answer is
Katie’s blanket, which she’s had since she was four, is starting to look scruffy.
I just took the test and got it right
The sentence that is been written in compliance with the guidelines for commas is; Katie’s blanket, which she’s had since she was four, is starting to look scruffy.
In English, punctuation is very essential in giving a good structure to the sentence and this help the reader.
Among the sentences given, " Katie’s blanket, which she’s had since she was four, is starting to look scruffy" was punctuated well with commas.
Learn more about commas at;
https://brainly.com/question/11352260