I choose option B, more public washrooms downtown.
Now it is very difficult to find a washroom when you are downtown. Last summer I went there with my two kids for the festival, and my daughter needed toilet. We walked for 20 minutes but all the restaurants said the washroom is only for customer. Finally we had to buy coffee for use the washroom. It was very stressful.
I think this problem is same for many people, like old people, pregnant women and tourists. Also people who don't have home need washrooms, if not they use the street and it is not clean for everybody.
Wi-Fi is good also, but today most people have data on their phone. Also many cafes and the library already have free Wi-Fi. But you can't find a washroom on your phone. My friends who visit from other cities also say the same thing about our downtown.
So I think washrooms are more important for our downtown.