Use of or from to complete the sentence Is your new skirt made wool or cotton

To complete the sentence properly, the correct preposition to use is "of." The sentence should be: "Is your new skirt made of wool or cotton?" Explanation: - When we talk about the material something is made of, we usually use the preposition "of." In this case, the question is asking about the material the skirt is made of, so we should use "of" after "made." If you have any more questions or need further clarification, feel free to ask!