The correct option is
C a-3, b-4, c-5, d-2, e-1
- Pennatula (sea fan) belongs to the Phylum Cnidaria and class Anthozoa.
- Beroe (comb jelly) belongs to the phylum Ctenophora.
- Monocystis belongs to the phylum Protozoa and class Telospora.
- Wuchereria is a filaria nematode that belongs to Aschelminthes.
- Cliona is commonly called boring sponges belong to the Porifera phylum and class Demospongiae.
So, the correct answer 'a-3, b-4, c-5, d-2, e-1'.