Annelida is the correct answer.

- Animals with metameric segmentation: Metameric segmentation refers to the division of the body into repeated segments. Each segment typically contains a set of organs and specialized structures. Annelids, such as earthworms and leeches, exhibit metameric segmentation throughout their body. This segmentation allows for greater flexibility and mobility in these animals.

- Bilateral symmetry: Bilateral symmetry is the arrangement of body parts in such a way that the animal can be divided into two equal halves along a single plane. Annelids also exhibit bilateral symmetry, meaning that their body can be divided into two mirror-image halves. This symmetry allows for efficient movement and specialization of body parts.

- Closed circulatory system: A closed circulatory system is a type of circulatory system where the blood is confined to blood vessels and does not flow freely in body cavities. Annelids have a closed circulatory system, which means that their blood is contained within vessels and is pumped by a heart. This system allows for efficient transport of nutrients, gases, and waste products throughout the body.

- Annelida: Annelida is a phylum of the animal kingdom that includes segmented worms. These worms exhibit metameric segmentation, bilateral symmetry, and a closed circulatory system. They have a tube-within-a-tube body plan, with an outer body wall and an inner digestive tract. Annelids can be found in various habitats, including freshwater, marine, and terrestrial environments.

In conclusion, animals with metameric segmentation, bilateral symmetry, and a closed circulatory system belong to the phylum Annelida. Examples of annelids include earthworms, leeches, and marine polychaetes.