Which of these is a bast fiber?

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Multiple Choice

Which of these is a bast fiber?

Explanation:
Bast fibers come from the inner bark of plants, the phloem, and flax is a classic example. Flax fibers are harvested from the stem’s phloem and processed into linen, giving them the characteristic strength and flexibility of bast fibers. This distinguishes them from silk fibers, which come from silkworms; mineral fibers like asbestos; and the broad, nonspecific category of “textile fibers.” That plant-origin, phloem-based source is what makes flax a bast fiber.

Bast fibers come from the inner bark of plants, the phloem, and flax is a classic example. Flax fibers are harvested from the stem’s phloem and processed into linen, giving them the characteristic strength and flexibility of bast fibers. This distinguishes them from silk fibers, which come from silkworms; mineral fibers like asbestos; and the broad, nonspecific category of “textile fibers.” That plant-origin, phloem-based source is what makes flax a bast fiber.

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