In the sentence the underlined part, who is running for mayor, is a <u>nonrestrictive clause.</u> The correct options are B and C.
<h3>What is a non-restrictive clause?</h3>
A non-restrictive clause is a clause that adds additional information about the subject or proper noun.
Commas are used to write a non-restrictive clause, which shows this is additional information.
Thus, the correct options are B and C.
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Carbon dioxide : the air component in soil provides the carbon dioxide needed for photosynthesis
Any process to have heat transfer from a cooler to a hotter object as its sole result.
