Concept:
Specialty animal fibers (protein fibers) are categorized by the specific animal they originate from.
Step 1: Tracing the origin of Mohair:
• Mohair: Is the long, lustrous hair specifically obtained from the Angora goat (4).
• Alpaca: Produces Alpaca wool (from the Camelid family).
• Vicuna: Produces the world's finest and rarest wool.
• Musk deer: Is known for musk secretion, not textile fiber production.
Step 2: Conclusion:
The Angora goat is the correct source for Mohair fiber.