Read each sentence to find out whether there is any grammatical error in it. The error, if any will be in one part of the sentence. The letter of that part is the answer. If there is no error, the answer is 'D'. (Ignore the errors of punctuation, if any). (solve as per the direction given)

The sentence reads: "He is too intelligent to make a mistake." Let's break it down to identify any grammatical error:

1. Option A - He is:
   • This part is grammatically correct. "He is" is a properly structured subject-verb phrase.
2. Option B - too intelligent:
   • This part is correct. "Too intelligent" is a valid adjective phrase used to describe "he" and is appropriate in this context.
3. Option C - to make a mistake:
   • This part is also correct. "To make a mistake" is an infinitive phrase that functions as the complement of "too intelligent," expressing the idea that being "too intelligent" prevents making a mistake.
4. Option D - No error:
   • There are no grammatical errors in the sentence. All parts are properly constructed.
5. Final Answer:
   • The sentence is free of errors, so the correct answer is D. No error.