pascalaualin

It is a call.

It is a tough spot, it's seems like a random 5 or a really marginal hand, I stick to fold most of the time, btw you can check sometimes the turn here

Easy fold, you usually face 66, two pairs or a flush draw.

Just call pre, call on flop, and eventually take the lead on turn against bt..

Either bigger bet on flop, or in that case imo fold.