which sentence correctly uses punctuation conventions?

- The local politician who won her race handily (will speak at the grand opening event).
- My grandmother told me, "treat others the way you want to be treated."
- There are three reasons to visit the beach: the sun, the sand, and the surf.
- We should visit the farmer' market, it tends to have many local vendors.

My grandmother told me, "treat others the way you want to be treated."