Final answer:
Humans are classified as having bilateral symmetry, being triploblastic, coelomate, and experiencing direct development, fitting best with classification option d). These features, especially bilateral symmetry and a coelom, have facilitated more complex body structures and functions.
Step-by-step explanation:
Human Classification in Animal KingdomHumans are classified in the animal kingdom based on various criteria such as symmetry, germ layers, coelom, and embryological development. When categorizing humans using these terms, we refer to the classification as: Bilateral symmetry, because a longitudinal section will divide humans into roughly equivalent right and left halves; triploblastic, because humans develop three germ layers (ectoderm, mesoderm, and endoderm); coelomate, because we have a true body cavity entirely within the mesoderm; and direct development, as humans do not have an intermediate larval stage in their development. Therefore, the classification that best fits humans is option d) which says humans possess bilateral symmetry, are triploblastic, coelomate, and have direct development.he classification of humans from the most general to the most specific is as follows:
Bilateral symmetry: Humans have bilateral symmetry, meaning their body can be divided into two mirror-image halves.Triploblastic: Humans have three germ layers - the endoderm, mesoderm, and ectoderm.Coelomate: Humans have a coelom, which is an internal body cavity surrounded by mesoderm.Direct development: Humans undergo direct development, where the embryo develops into a miniature adult without passing through a larval stage.The evolution of bilateral symmetry and a true coelom has brought about numerous advantages, such as allowing for specialized body regions and organ development, better locomotion, and a more complex structure and functioning of the body systems.