Answer:
a cnidarian, because it was collected in shallow salt water
Explanation:
looked it up
A scientist is most likely observing a cnidarian because it has a gut. Thus, the correct option is A.
Cnidarians may be defined as an organism of invertebrates that generally belongs to the phylum of the more or less radially symmetrical bodies, and lack a true body cavity. They also possess tentacles surrounding the mouth.
Sponges and cnidarians both live in shallow salt water. But the distinguishing feature is that cnidarian possesses a coelenterate cavity, while sponges have tissue layers.
Cnidarians are also known as coelenterates which means hollow gut or central body cavity. Cnidarians' bodies have two or more layers. A gastrovascular cavity has an appearance of coelenterate that has a single exterior opening that serves as both mouth and anus.
Therefore, a scientist is most likely observing a cnidarian because it has a gut. Thus, the correct option is A.
To learn more about Cnidarians, refer to the link:
https://brainly.com/question/11216578
#SPJ5
