Identify which sentence is the most objective?

a) While the city could afford to build more parks, it would be an illogical waste of money.
b) To save its children from moral death and destruction, the city must build more parks.
c) While playgrounds are important, the city can't afford to spend its tax dollars on them when more pressing projects exist.
d) The city can't afford to waste precious tax dollars on ridiculous trifles such as parks and playgrounds.