Which organism is placed in the phylum Eukarya?

A: hot springs

B: organism without a nucleus

C: dog

D: E. coli

E: infection bacterium

The correct option is C) dog

Explanation:

Eukaryotes can be defined as organisms which have a proper nucleus which is enclosed in a membrane. Prokaryotes can be defined as organisms which do not have a nucleus. The genetic material of prokaryotes is present in the cytoplasm. The genetic material of eukaryotes is present enclosed in the nucleus. Examples of eukaryotes include plants and complex organisms like dogs, cats etc. Hence, option C is correct.

Other options are not correct because the organisms mentioned in them are prokaryotes.