Cbet or check vs the population? I think it's a cbet if there would be a FD, but on this board I'm not sure.
PokerStars - 10/20 NL (2 max) - Holdem - 2 players
Hand converted by PokerTracker 4
Hero (SB): 25 BB
BB: 25 BB (VPIP: 62.50, PFR: 22.22, 3Bet Preflop: 0.00, Hands: 49)
Hero posts SB 0.5 BB, BB posts BB 1 BB
Pre Flop: (pot: 1.5 BB) Hero has Q

A
Hero raises to 2 BB, BB calls 1 BB
Flop: (4 BB, 2 players) 9

Q

K
BB checks,
Hero ?