The use of on the other hand, also, and in other words, are c. They transition to another thought. These words are usually used in transitioning sentences to begin a new thought!
I hope this helps you!
I believe it is option "D.) The flu vaccine is not reliable enough to be worthwhile"
It would have a negative impact on the economy due to people not spending money to have the flu vaccine.
I think that the correct answer is B.<em>
</em>I hope you like this answer and have a great day! :)<em>
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