Which term is applied to a legislator who introduces a bill?

president pro tempore
sponsor of the bill
proponent of the bill
director of the bill

B OR d

Which one? B or D?

The term applied to a legislator who introduces a bill is the "sponsor of the bill." So, the correct answer is B.

Read this VERY CAREFULLY!

http://kids.clerk.house.gov/grade-school/lesson.html?intID=17