With that father, assuming the chick is female,* I am pretty sure that any of the hens COULD be the mother.
Because of the brown in the feathers of the chick, I think the mother is more likely to be one of the hens that shows some amount of brown (the two that are mostly brown, and the one with...
I see two photos now: one has 5 hens, the other has one rooster.
So are you asking which hen is the mother of one of the other hens? Or trying to identify the mother of a chick that isn't in the picture?