Final answer:
The correctly punctuated sentence is: 'In reality, nothing could be further from the truth.'
Step-by-step explanation:
The correctly punctuated sentence is: In reality, nothing could be further from the truth. When using a comma, it is important to set it off around interrupters or introductory elements in a sentence. In this case, the phrase 'In reality' is an introductory element and should be followed by a comma. The correct punctuation here helps to make the sentence clear and easier to read.
Learn more about Punctuation in English sentences