The correct option is
B Absent
Urochordata fall under the phylum Chordates whose animals are enterocoelomates but Urochordata is an exception and although they have the embryonic layers ectoderm, mesoderm and endoderm they do not have a coelom.
A) Schizocoel is an animal with a coelom which is derived by splitting of mesodermal mass. It is not present in urochordates.
B) Coelom is absent in Urochordata.
C) Enterocoel is an animal with a coelom derived out of the archenteron or embryonic gut.
D) Segmented coelom is not present in urochordates.
So, the answer is 'absent'.