The correct answer is (D) A buttoned sweater; a knitted sweater or jacket that is collarless and buttons down the front.

The name, cardigan, honors the seventh Earl of Cardigan, J. T. Bridnell (1797-1868), a British cavalryman who fought in the Crimean War.

Examples of use:

• He packed a cardigan for use during the cool evenings.
• The class sweater was a blue cardigan with two yellow stripes on each arm.