Identify the sentence that uses commas correctly. the punctuation i struggle with the most is using too many commas and leaving out quotation marks yet i always get a's. the punctuation i struggle with the most is using too many commas and leaving out quotation marks, yet i always get a's. the punctuation i struggle with the most, is using too many commas and leaving out quotation marks yet i always get a's. the punctuation i struggle with the most, is using too many commas, and leaving out quotation marks, yet i always get a's.