Which set has different types of animals?

Options

A. Sea cow, seal, whale, bat
B. King crab, cockroach, silver fish, spider
C. cuttle fish, cray fish, hag fish,
D. Sea feather, sea urchin, star fish

Answer

To determine which set has different types of animals, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Analyze Option 1: Sea Cow, Seal, Whale, Bat**
- All these animals are mammals.
- Sea Cow (Sirenian), Seal (carnivorous marine mammal), Whale (aquatic mammal), and Bat (flying mammal) all belong to the class Mammalia.
- **Conclusion:** All animals in this option are of the same class (Mammalia).

2. **Analyze Option 2: King Crab, Cockroach, Silver Fish, Spider**
- King Crab: Crustacean (Phylum Arthropoda)
- Cockroach: Insect (Phylum Arthropoda)
- Silver Fish: Wingless insect (Phylum Arthropoda)
- Spider: Arachnid (Phylum Arthropoda)
- **Conclusion:** All animals in this option belong to the same phylum (Arthropoda).

3. **Analyze Option 3: Cuttlefish, Crayfish, Hagfish**
- Cuttlefish: Mollusk (Phylum Mollusca)
- Crayfish: Crustacean (Phylum Arthropoda)
- Hagfish: Chordate (Phylum Chordata)
- **Conclusion:** These animals belong to different phyla (Mollusca, Arthropoda, and Chordata), making this option distinct.

4. **Analyze Option 4: Sea Feather, Sea Urchin, Starfish**
- Sea Feather: Echinoderm (Phylum Echinodermata)
- Sea Urchin: Echinoderm (Phylum Echinodermata)
- Starfish: Echinoderm (Phylum Echinodermata)
- **Conclusion:** All animals in this option belong to the same phylum (Echinodermata).

### Final Conclusion:
- The only option that contains animals from different types (different phyla) is **Option 3: Cuttlefish, Crayfish, Hagfish**. Therefore, the answer to the question is **Option 3**.

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