Whale is mammal because it has

Options

A. Diaphragm
B. Protruded scrotum
C. Vivipary
D. all of the above

Answer

**Step-by-Step Solution:**

1. **Understanding Mammals:**
- Mammals are a class of animals characterized by certain unique features. These include the presence of mammary glands, which produce milk, and the ability to give birth to live young (vivipary).

2. **Identifying Characteristics of Whales:**
- Whales, being mammals, possess specific characteristics that classify them within this group.

3. **Presence of Diaphragm:**
- Whales have a diaphragm, which is a muscular structure that aids in respiration. This feature is common among mammals and is essential for efficient breathing.

4. **Vivipary:**
- Whales exhibit vivipary, meaning they give birth to live young rather than laying eggs. This is a significant characteristic of most mammals, with the exception of monotremes (like the platypus).

5. **Protruded Scrotum:**
- Most mammals, including whales, have a protruded scrotum, which is involved in the reproductive system. This feature helps in regulating the temperature of the testes, ensuring optimal conditions for sperm production.

6. **Conclusion:**
- Since whales possess all these characteristics—diaphragm, vivipary, and protruded scrotum—they are categorized as mammals. Therefore, the answer to the question is "all of the above."

**Final Answer:**
Whale is a mammal because it has diaphragm, protruded scrotum, and vivipary. The correct answer is "all of the above."

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