The stimulus is about sterilizing pets: specifically, should the city pay for pets to be sterilized, or should pet owners have to pay? Some people think that the city should pay, because then the city would actually save money that they spend dealing with stray animals. The assumption here is that if the city pays for pets to be sterilized, there will be fewer strays. So that's our context for the argument.

The argument we're concerned with is made by the "funding opponent," who concludes that this funding will not significantly reduce the number of stray animals. In support, the funding opponent explains that a significant majority of pet owners in the city already pay for their pets to be sterilized. So according to the funding opponent, the city funding this initiative would only make a small difference in pet sterilization, meaning a minimal impact on the number of strays.

This is a strengthen except question, which means we're looking for the single answer choice that does not strengthen the funding opponent's position. The correct answer could weaken or could do nothing at all, which means the easiest way to find it is to identify the answer choices that do strengthen and eliminate them.

The funding opponent's argument relies on the single premise that many pet owners already sterilize their animals, so we can strengthen by finding other reasons that city funding for pet sterilization won't reduce stray numbers. This could mean further supporting the idea that funding won't lead to additional pet sterilization, or showing that additional pet sterilization won't affect stray numbers. And remember, any answer that strengthens gets eliminated!