Answer:
(c). the medusa-shaped jellyfish class
Explanation:
Scyphozoa can be defined as a class of jellyfishes, in which medusa form is dominant. Generally, organisms belong to this class show two forms during their life cycle, medusa and polyp.
The medusa form represents a free-floating form, with an umbrella shaped body. Like other medusae, scyphozoans eat fish and crustaceans by using nematocysts. True jellyfishes are examples of scyphozoans.
Thus, the correct answer is option (c).
