problem with selecting

I’m in Windows 7, Audacity 2.0.1

I’m sure I just accidentally toggled something, but i can’t figure out what it was. and i can’t undo it.

Somehow, i just made it so when I click and drag (using mouse, touchpad, etc), it automatically selects in one second increments. I can’t even change the boundaries to be less or more. It’s one second, two seconds, etc. or nothing.

Please help - this is driving me insane.

Snap-To on the bottom of the window.