Which of the following is a type of picorna virus?

Coxsackie virus is indeed a type of picornavirus, which belongs to the family Picornaviridae. This family consists of small, non-enveloped viruses with single-stranded RNA genomes. Coxsackie viruses are known for causing various illnesses, including hand, foot, and mouth disease, as well as viral meningitis.

The other viruses listed do not belong to the picornavirus family. Hepatitis B virus is a member of the Hepadnaviridae family and is a enveloped virus with a double-stranded DNA genome. Zika virus is classified under the Flavivirus genus and is an enveloped, single-stranded RNA virus. Ebola virus is part of the Filoviridae family, known for causing severe hemorrhagic fever, and also has an enveloped RNA structure. Thus, Coxsackie stands out as the representative of the picornavirus group among the options provided.