Answer : The correct answer is - bilateral symmetry, coelomates, and four levels of cell organization (cells, tissues, organs, organ systems).
Bilateral symmetry is a body plan of a life form according to which an organism can be divided into two equal halves (right and left half), only when it is cut through midline/central axis of the body. It is present in most vertebrates.
Most of the vertebrates exhibit four levels of cellular organization that are cell, tissue (group of cells performing similar function), organ ( made up of different types of tissue), and organ system (made up of different organs, working together in coordination).
Most vertebrates are coelomates, meaning that they have a fluid filled true body cavity, which is lined by mesoderm and possesses digestive tract and different body organs.