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Expression of IdeasHardConcluding with a practical result

Expression of Ideas practice question

While researching a topic, a student has taken the following notes: - Spider silk is stronger, weight for weight, than steel. - Spiders cannot be farmed for silk because they eat one another when kept together. - Scientists have inserted spider-silk genes into silkworms. - The modified silkworms spin a silk with some of the spider silk's strength.

The student wants to conclude the text by describing the practical result of the research. Which choice most effectively uses relevant information from the notes to accomplish this goal?

  1. A. Because spiders cannot be farmed, scientists have given silkworms spider-silk genes, and the silkworms now spin a silk with some of the spider silk's strength.Correct
  2. B. Spider silk is stronger, weight for weight, than steel.
  3. C. Spiders eat one another when kept together.
  4. D. Scientists now farm spiders on a large scale for their silk.

Answer: A. Because spiders cannot be farmed, scientists have given silkworms spider-silk genes, and the silkworms now spin a silk with some of the spider silk's strength.

The practical outcome, with the reason it was needed — choice A.

Why the other answers are wrong

B. Spider silk is stronger, weight for weight, than steel.
The starting fact, not the result.
C. Spiders eat one another when kept together.
The obstacle, not the result.
D. Scientists now farm spiders on a large scale for their silk.
The notes say spiders cannot be farmed.

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