Question

sample a
these animals are grouped together because all of them -
a. live in the water
b. are fish
c. are warm - blooded
d. lay eggs

Explanation:

• Option A: Dolphins, jellyfish, and crabs all inhabit water, so this is a common trait.
• Option B: Dolphins are mammals, jellyfish are cnidarians, and crabs are arthropods—none are fish, so B is wrong.
• Option C: Jellyfish and crabs are cold - blooded, so C is incorrect.
• Option D: Dolphins give live birth, so D is wrong.

Answer:

A. live in the water