​Identify the part which contains the error.​

Correct option is D

The correct answer is (d) is it?

• Explanation:
  The sentence provided is a statement followed by a question tag. In English, the structure of question tags is:
• If the main clause is positive, the tag is negative.
• If the main clause is negative, the tag is positive.
• Here, the main sentence is negative: "he can’t hear properly" (cannot hear).
• Therefore, the question tag must be positive.
• The correct positive tag for "he can't" should be: "can he?" not "is it?"

Thus, the correct form would be:
"Unfortunately, he can’t hear properly, can he?"

Information Booster

1. Question Tags Rule: Positive statement → Negative tag; Negative statement → Positive tag.
2. Auxiliary Verb Matching: The auxiliary verb in the statement ("can") must be used in the tag.
3. Subject Matching: The subject of the tag should match the subject of the main sentence ("he").
4. Error in 'is it?': "Is it?" is inappropriate because the auxiliary verb in the main clause is "can," not "is."

Additional Information

• (a) Unfortunately,
  Incorrect — No error. "Unfortunately" is correctly used as an introductory adverb.
• (b) he can’t
  Incorrect — No error. "He can’t" is grammatically correct, expressing inability.
• (c) hear properly,
  Incorrect — No error. "Hear properly" is a correct verb phrase describing the action.