playing low pps hu in raised pot

PokerStars No-Limit Hold'em, $0.02 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP2 ($4.01)
MP3 ($2.10)
CO ($5.12)
Hero ($2.03)
SB ($4.32)
BB ($4.31)
UTG ($2.47)
UTG+1 ($2.77)
MP1 ($4.05)

Preflop: Hero is Button with 5, 5.
1 fold, UTG+1 calls $0.02, 4 folds, Hero raises to $0.1, 2 folds, UTG+1 calls $0.08.

Flop: ($0.23) A, 6, 8 (2 players)
UTG+1 bets $0.06, Hero ???

Which options do you prefer and why, if any?

1. I have a weak hand and he's probably outflopped me. I only have few outs to improve, the board is somewhat connected and the pot is small. The risk/reward is not worth it. So I fold and wait for a better spot.

2. I have a weak hand. However, his weak donkbet feels like a probing/blocking bet, telling me he has connected with the flop but doesn't want to play a big pot. If I threaten him with a big pot, he'll probably fold his better but weak hand. So I raise hoping for a fold and shutdown if called.

3. You can make a case for both 1. and 2.

4. None of the above. What I'd do is....

i'll raise here if it is a decent player ( 0,25 or so), if he calls i take a free card on the turn and C/F the river. versus a bad player i usually fold here and wait for a better hand to stack the guy

raise to like .25 and give up afterwards. also, you prob don't need to bother with raising small and medium pairs preflop at 2nl. limping for sets will make lots of money at this level.