Radha is as clever as Sudha is cleverer.
To correct the given sentence "Radha is as cleverer as Sudha," it is important to understand the correct usage of the adjectives in comparative and positive forms.
The phrase "as ... as" is used to compare two things or people of equal degree. Here, we use the positive form of the adjective.
In the given sentence, the adjective "cleverer" is incorrectly used because the structure "as ... as" demands the positive form "clever."
Therefore, the correct sentence should be "Radha is as clever as Sudha." This uses the positive form "clever" correctly within the "as ... as" structure, indicating that Radha and Sudha have the same level of cleverness.
Now, let's examine the options:
Conclusively, the most appropriate correction is "Radha is as clever as Sudha." This structure accurately uses the positive form according to English grammar rules.