Select the three prepositional phrases. After the one-lane bridge, look to your left and take the narrow, unmarked trail that runs beside
the creek.

a. it reminds protestors of the reasons they have to protest.

from the political point of view it could be said that the candidate   is an effective speaker because she takes a strong position on the issue. it is an open discussion but probably she is making a presentation and can choose which subjects she wants to address. she is very likely to attain her aim which is to convince voters to accept her proposal.