Identify the examples of convergent evolution from the following :
(i) Flippers of penguins and dolphins
(ii) Eyes of octopus and mammals
(iii) Vertebrate brains

Explanation

To identify the examples of convergent evolution from the given options, we need to understand what convergent evolution is. Convergent evolution occurs when unrelated organisms develop similar traits or adaptations due to similar environmental pressures or challenges.

### Step-by-Step Solution:

1. **Understand Convergent Evolution**:
- Convergent evolution is the process where different species evolve similar traits independently, often because they adapt to similar environments or ecological niches.

2. **Analyze the First Example**:
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