What type of fabric is made from the fibers of the fleece of sheep?

Wool is the type of fabric made from the fibers of the fleece of sheep. It is a natural fiber known for its warmth, durability, and moisture-wicking properties, making it ideal for clothing, especially in cooler climates. Wool fibers have unique characteristics that enable them to provide insulation while also allowing for breathability. This combination of features is what makes wool a popular choice in the apparel industry for sweaters, suits, and various outerwear products.

Cotton is derived from the fibers of the cotton plant, while linen is made from the fibers of the flax plant. Silk, on the other hand, is produced by silkworms and is known for its luxurious feel and sheen. Each of these fabrics has distinct properties and uses, but wool specifically comes from sheep fleece, which is what makes it the correct answer in this context.