Answer: D) The overwhelming number of geese at the park has become unacceptable.
Explanation: when we talk about a viewpoint, we are referring to the opinion of a person according to their perspective. In this case the person who writes the letter, starts by explaining the situation, how she/he and him/her family were robbed while having lunch at the downtown park, in that part the person only explains the facts, it is in the last phrase that he/she expresses his/her point of view about the number of geese at the park and how unacceptable he/she finds it.
