Final answer:
The correct sentence is: The duck's wings are brown and white.
Step-by-step explanation:
The correct sentence is: The duck's wings are brown and white.
In this sentence, the possessive noun is 'duck's.' The apostrophe and the letter 's' indicate that the wings belong to the duck. It shows ownership or possession.
In option 1, 'The ducks wings are brown and white,' there is no apostrophe to indicate possession, so it is incorrect. In option 3, 'The ducks' wings are brown and white,' the placement of the apostrophe after the 's' indicates plural possessive, suggesting the wings belong to multiple ducks, which is not the intended meaning of the sentence.
Learn more about Possessive Nouns