Concept:Adjectives in English follow a standard order: opinion, size, age, colour, origin, material, purpose.
Explanation:The words given are “new” (age), “blue” (colour), and “silk” (material).
According to the correct order, age comes before colour, and colour comes before material.
So the proper sequence is “new blue silk”.
Option C is therefore the correct choice.
Answer:C. new blue silk