What familial relationship exists in endgame?
a. hamm and clov are brothers.
b. nagg and nell are brother and sister.
c. there is no familial relationship in the play.
d. nagg and nell are hamms parents

The familial relationship that existins in Endgame is D. Nagg and Nell are Hamm's parents.

Endgame is a play written by Samuel Beckett. It is only made up of one act and it presents four characters: Hamm, Clov, Nagg and Nell. The play premiered at the Royal Court Theatre in 1957. In Endgame, Hamm is an old man who is blind and Clov is his servant. Furthermore, Nagg and Nell are Hamm's parents and neither of them has legs. Moreover, both Nagg and Nell live in trash cans.  

c. barbarians with unexpected intelligence