Students at a major university must go through several registration steps. officials have observed that it is typically the case that the waiting line at the fee-payment station is the longest. this would seem to suggest that the fee-payment station is the in the student registration process.

   Bottleneck

Explanation:  Bottleneck is a term used to describe a narrower part of a road or a track or an intersection that comes after the usual wider part of the road and which impedes the usual flow of traffic, thus slowing it down. In this case, due to the increased activity of students during registration process, the waiting line at the fee-payment station is the longest, there is a disruption at this line to the students flow, whether due to the slowness of the worker performing it, or for some other reason, the fact that there is a disruption in the flow students, i.e bottleneck.

the answer is b, encourage free trade

would it be plagiarism to copy and paste off of here? ?