Transition words or phrases always show the relationship or connection between different elements. This implies that an adequate transition should indicate the way different elements relate. In the case presented, the elements "the Octoberfest, the Riverwalk, and cultural literacy" explain the many subjects Willon Seen has written on. This means these last elements act as examples or illustrations of the subjects, and therefore, it is necessary to add a transition that shows this relationship; this includes transitions like for example, for instance, and such as (option C).
