Spider silk is, by weight, stronger than steel and tougher than Kevlar. Scientists have long sought to mass-produce it, but farming spiders is impractical: most species are cannibalistic and produce only tiny quantities. Researchers are now engineering bacteria, yeast, and even goats to produce silk proteins, with the long-term goal of manufacturing fibers in industrial quantities — though commercial output remains limited.
Which choice best states the main idea of the text?
- A
Spiders are easy to farm.
- B
Goats produce more silk than spiders.
- Ccheck_circle
Spider silk's remarkable properties have driven attempts to manufacture it through other organisms, with progress but not yet large-scale success.
- D
Spider silk has been successfully mass-produced commercially.
Explanation
The passage's central claim is the gap between spider silk's promise and current production — B. A and C contradict; D overstates.