Hey, the answer to the question would be "subordinate conjunction"
When joining two independent clauses with a comma, a subordinate conjunction needs to accompany the comma.
Picture ??? nobody knows what ur talking about
The first option of "friction and air resistance being the reason for him to slow down
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I believe it’s answer choice A. Even though it does say that they are estimated to spend 155 billion dollars, they are asking questions related to spending money, such as where they shop and what books they like and so on.