Answer: Options A, B, and D
Explanation:
Pseudocoelomates are pouches partially lined with the messenger and at not completely derived from the mesoderm. A body cavity be it pseudocoelom or coelom can cushion organs suspended in it providing hydorstatic pressure. The coelom is a fluid or air filled cavity derived completely from the mesoderm. The pseudocoelom is also a fluid or air-filled cavity. A body cavity helps to separate internal organs from each other depending on the type of body cavity. For example, in humans, there is the thoracic cavity with their internal organs suspended therein, abdominal cavity, cranial cavity etc.