3.8 billion or how many days are you talking?
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.
Learn more about non-restrictive clause
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If everyone in the population has an equal chance of inclusion in a study, then one would say that the study used a Random sampling technique for the study. (Option A.)
The way in which we select a sample of individuals to be research participants is critical. Random sampling makes sure of the population which has to be random and need not be pre determined . The procedure we plan to implement will determine if we are biased or not , if the people know each other or not etc.
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That is a very good score! Don’t be disappointed. It’s okay to retake the SAT if you are not happy with the score. Most colleges take your highest score anyways. Good job!