The correct answer is E. No error.
The sentence is grammatically correct. The word “can” is used to express ability, and the word “able” is redundant. The word “unless” is used to introduce a condition, and the word “help” is a noun that refers to assistance. The sentence is clear and concise, and it conveys the intended meaning.
Here is a breakdown of each option:
- A. Mangesh cannot be able
The word “can” is used to express
ability, and the word “able” is redundant. The sentence would be more concise without the word “able.”- B. to finish this work
The word “to” is a preposition that is used to indicate the purpose of an action. The sentence is grammatically correct with the word “to.”
- C. unless he takes the
The word “unless” is used to introduce a condition. The sentence is grammatically correct with the word “unless.”
- D. help of his colleagues
The word “help” is a noun that refers to assistance. The sentence is grammatically correct with the word “help.”
- E. No error
The sentence is grammatically correct. There is no error in the sentence.