Step 1: Understanding acetamide.
Acetamide is an amide with both acidic and basic properties. It can act as a weak acid due to the presence of the carbonyl group, and as a base due to the nitrogen atom in the amide group.
Step 2: Analysis of options.
(A) Acidic: Acetamide is not strongly acidic.
(B) Alkaline: Acetamide is not strongly alkaline.
(C) Amphoteric: This is correct because acetamide has both acidic and basic properties.
(D) Neutral: Acetamide is not neutral; it exhibits amphoteric behavior.
Step 3: Conclusion.
The correct answer is (C) because acetamide is amphoteric, showing both acidic and basic characteristics.