Answer:
I would think A (maybe B as well).
Step-by-step explanation:
"A" would a good supporting point for many people.
"B" would not want me to get a front-yard garden because that would make me think that all the animals in the neighborhood are going to eat all of my crops and poop in my driveway. It might make other people want one to see animals though, I guess.
The reason I ruled out "C" is because this is a persuasive argument to make citizens vote in favor out gardens in their communities.
I ruled out "D" because they are arguing in favor of gardens in general- not informing about the personal success of each gardener. In some areas, this information may harm your own side.