Find out whether there is any grammatical error in below sentence. From a tiny roon in / the slums, they have / managed to move to a good / house in a better locality.

The correct answer is: E. No error

The sentence is grammatically correct. The word “roon” is a typo, but it is clear from the context that the word should be “room.” The sentence is a simple sentence with a subject (“they”), a verb (“have managed”), and an object (“to move to a good house in a better locality”). The sentence is also clear and concise, and it conveys the intended meaning effectively.