Answer: I have a better suggestion: Let's improve the zoo!
Step-by-step explanation:
An argument is the main point being stressed by the author, and it is usually supported by a claim, a report or evidence. The main argument can be located anywhere in the writeup.
In the given essay, the writer started with a question of what a City could do with an extra $5 million. The second sentence saw him explaining the source of the information which is the City Council budget. The next two sentences show different suggestions from different people.
The last sentence highlights his main argument which is that the $5 million dollars should be used to improve the zoo.