A less clear hand to comment on for the esteemed panel

[0 doubt]

I was asked to find a less clear hand. How about this one? I feel like I should have raised the flop or even preflop?

Party Poker 1/2 Hold'em (9 max, 8 handed) converter

Preflop: Hero is UTG with A[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/club.gif[/img].
Hero calls, UTG+1 calls, MP1 calls, <font color="#666666">1 fold</font>, CO calls, <font color="#666666">2 folds</font>, BB checks.

Flop: (5.50 SB) 7[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(5 players)</font>
BB checks, Hero checks, UTG+1 checks, <font color="#CC3333">MP1 bets</font>, CO calls, BB calls, Hero calls, UTG+1 folds.

Turn: (4.75 BB) 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
BB checks, Hero checks, <font color="#CC3333">MP1 bets</font>, CO calls, BB folds, Hero calls.

River: (7.75 BB) 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, MP1 checks, <font color="#CC3333">CO bets</font>, Hero folds, MP1 folds.

Final Pot: 8.75 BB