Choose the revision that corrects the error in verb usage in sentence 1.
O While there be many options available for people who want to buy cars, doing research was one of the most important steps.
O While there are many options available for people who want to buy cars, doing research is one of the most important steps.
O While there are many options available for people who wanting to buy cars, doing research was one of the most important steps.
O While there are many options available for people who want to buy cars, do research was one of the most important steps.



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