( ) 1. ________ it is today!A. What fine weatherB. What a fine weatherC. How a fine weatherD. How fine a weather

The correct choice for the given sentence is A. "What fine weather it is today!"

Explanation:

1. Understanding the Expression:

   • The phrase "What fine weather" is an exclamatory sentence expressing admiration or surprise about the weather.

2. Analysis of Options:

   • A. What fine weather: This is grammatically correct because "what" is used to describe a noun (fine weather) in an exclamatory context.
   • B. What a fine weather: This is incorrect because "weather" is an uncountable noun and does not require the article "a."
   • C. How a fine weather: This is incorrect as it improperly uses the word "how" with an uncountable noun.
   • D. How fine a weather: This option is also incorrect since "weather" is uncountable and does not take the article "a."

3. Final Conclusion:

   • Given the grammatical rules and proper usage of expressions, A is clearly the correct answer.

Final Answer:

A. What fine weather it is today!