Astate might hold a primary instead of a caucus because a primary is
inexpensive and simple
transparent and engages local voters
faster and has higher turnout
highly active and promotes dialog during voting

The reason for which the state is more likely to clinch a primary rather than a Caucus because the primary is:

b). transparent and engages local voters.

Thus, option b is the correct answer.

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transparent and engages local voters

Explanation:

A state might hold a primary instead of a caucus because a primary is transparent and engages local voters. This is reasonable because, the person running for the position would have a better chance of getting votes from primary, rather than caucus.

well this isn't a question but if you are asking if it is true or false it is, true.