While researching a topic, a student has taken the following notes:
<ul> <li>Spider silk is produced by spiders and woven into webs.</li> <li>It is among the toughest known biological materials.</li> <li>Silkworm silk is produced by silkworm larvae as a cocoon.</li> <li>Silkworm silk is widely used for textiles.</li> <li>Spider silk is difficult to harvest at scale.</li> </ul> The student wants to contrast the practical use of the two silks. Which choice most effectively uses relevant information from the notes to accomplish this goal?Which choice most effectively makes the student's point?
- A
Silkworm silk forms cocoons.
- B
Spider silk is among the toughest biological materials.
- Ccheck_circle
Whereas silkworm silk is widely used for textiles, spider silk is difficult to harvest at scale.
- D
Both silks are produced by arthropods.
Explanation
The goal is practical use. Choice C contrasts the textile use of silkworm silk with the harvesting difficulty of spider silk. A is similarity, B and D each describe one silk.