The fastest growth is found in

Options

A. Elephant
B. Giraffe
C. Blue whale
D. Rhino

Answer

To determine which animal has the fastest growth rate among the options provided (elephant, giraffe, blue whale, and rhino), we can analyze the growth rates of each animal based on the information given.

### Step-by-Step Solution:

1. **Identify the Animals**: The question provides four options: elephant, giraffe, blue whale, and rhino. All of these are large mammals.

2. **Consider the Size**: Among these animals, the blue whale is noted as the largest living mammal. This is important because larger animals can have different growth patterns compared to smaller ones.

3. **Examine Growth Rates**:
- The blue whale calf, after a gestation period of about one year, weighs approximately 3 tons at birth.
- Once born, the calf grows at an impressive rate of about 90 kilograms per day due to its milk diet.

4. **Compare with Other Animals**:
- While elephants, giraffes, and rhinos are also large and grow significantly, their growth rates are not specified in the same manner as the blue whale's.
- The blue whale's growth rate of 90 kg per day is exceptionally high compared to the growth rates of the other animals.

5. **Conclusion**: Based on the information provided, the blue whale has the fastest growth rate among the options listed, with a remarkable growth of approximately 90 kg per day for its calf.

### Final Answer:
The fastest growth is found in the **blue whale**.

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