The correct option is B Bleeding
Bleeding : Bleeding is water in concrete which comes out to the surface of concrete because of low specific gravity.
It is seen in highly wet concrete or badly proportional mixes.
Segregation : Separation of the constituent material of concrete i.e. cement, sand and aggregate because they have different specific gravity.
Curing : Process of keeping concrete went to enable it to attain full strength is know as curing.