The same questions the candidates answer: the core 12 first, then every optional question from the full bank of 100. Your responses join a pool that shows, in aggregate, what residents care about. Every question is optional; answer one or all of them.
Responses are grouped by where your connection appears to be from; ones that don't look local may be removed. For that screening we privately keep your connection's network address, the town it points to, and a scrambled code that limits repeat submissions. If you choose to have your edit link emailed, that address is kept for delivery only. Only the survey admin can see any of it, it lasts only as long as your response, and nothing that could identify you is ever published.
Location screening is approximate. This site includes GeoLite2 data created by MaxMind, available from maxmind.com.