'How tall you have grown!' What kind of sentence is this?

The correct answer is Option D (exclamatory).

Key Points:
• English sentences are classified into types based on their function and punctuation.
• Analyzing the sentence: "How tall you have grown!"
• It expresses sudden, strong emotion or surprise, and it ends with an exclamation mark (!).
• Types of Sentences:
• Declarative (Assertive): Makes a statement and ends with a period.
• Interrogative: Asks a question and ends with a question mark (?).
• Imperative: Gives a command, request, or advice.
• Exclamatory: Expresses strong emotion and ends with an exclamation mark (!).
• Therefore, this is an exclamatory sentence. Option 4 is correct.
• Key Takeaway: A sentence expressing strong emotion with an exclamation mark (!) is an exclamatory sentence.