Final answer:
The correct punctuated revision is: Whether I like it or not, by tomorrow I must choose a college to attend. The clause "whether I like it or not" is non-essential.
Step-by-step explanation:
The correct punctuated revision is:
Whether I like it or not, by tomorrow I must choose a college to attend.
The clause "whether I like it or not" is non-essential.
This revision is correct because it uses commas to set off the non-essential relative clause, which provides additional information about the main clause but is not necessary for the sentence's meaning.
Learn more about Punctuation in English sentences