What daughter of Cassiopeia did Perseus marry?

Perseus married Andromeda, the daughter of Cassiopeia. In Greek mythology, Cassiopeia was known for her beauty and her vanity, boasting that she and her daughter were more beautiful than the Nereids, the sea nymphs. This hubris angered the sea god Poseidon, who sent a sea monster, Cetus, to ravage the kingdom. To appease the god and save the kingdom, Andromeda was sacrificed to the monster, bound to a rock as an offering. Perseus came to her rescue, famously defeating the monster and ultimately marrying her. Their story highlights themes of heroism and love, which are central to many Greek myths.

The other choices either represent different figures in Greek mythology who do not have a direct connection to Perseus in the context of marriage or are not related to Cassiopeia's lineage.