Octopus is an the example of Phylum _________.

The correct answer is Option (4)-Mollusca

Octopus is an example of Phylum Mollusca.

Explanation:

• Mollusca is a diverse phylum that includes organisms such as snails, clams, squids, and octopuses.
• Octopuses, like other cephalopods, belong to the class Cephalopoda within the phylum Mollusca.
• Mollusks are characterized by a soft body, often covered by a hard shell (although not in all cases), and a muscular foot.

So, the correct answer is Mollusca.