GR translation: Snap to, Slothrop.

[Mike Jing]

P63.3-7  (6) (The day of the Ascent and sacrifice. A nation-wide
observance. Fats searing, blood dripping and burning to a salty brown
. . . ) You did the Charlottesville shoat, check, the Forest Hills
foal, check. (Fading now . . . ) The Laredo lamb. Check. Oh-oh. Wait.
What’s this, Slothrop? You never did the Kenosha kid. Snap to,
Slothrop.

snap to,
a. to come to attention: The troops snapped to when the colonel walked in.
b. to shape up: If you don't snap to and study, you'll flunk the course.

Which one is the correct meaning of "smap to" here?