Concept:Correct spelling is essential for formal writing. The word "Acknowledgement" follows standard English spelling rules.
Explanation:Option A, "Acknowledgement", is spelled with 'ge' after 'know' and ends with 'ment'.
Option B, "Acknowledment", incorrectly omits the 'ge' sound.
Option C, "Acknowlegdment", has the letters 'dg' in the wrong order.
Option D, "Acknowlegement", misses the second 'd' before 'ment'.
The correct form is "Acknowledgement", meaning recognition or acceptance.
Answer:A. Acknowledgement