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Verbal·Expression of Ideas·Rhetorical Synthesis

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While researching a topic, a student has taken the following notes:

• A nonnative species that causes environmental or economic harm when introduced to an ecosystem is considered invasive.
• Alligator weed is an invasive species of aquatic plant that crowds out native plants and impedes aquatic recreation.
• It was first introduced to the US accidentally in ship ballast water.
• Diffuse knapweed is an invasive species of flowering plant that crowds out livestock forage and native plants.
• It was first introduced to the US accidentally through seed contamination.

The student wants to emphasize a similarity between alligator weed and diffuse knapweed. Which choice most effectively uses relevant information from the notes to accomplish this goal?

A

Diffuse knapweed is an invasive species that crowds out livestock forage and native plants, causing environmental harm.

B

Alligator weed was first introduced accidentally in ship ballast water, but it now crowds out native plants and impedes aquatic recreation.

C

Alligator weed is an invasive species of flowering plant, and diffuse knapweed was first introduced accidentally in ship ballast water.

D

The harm to ecosystems caused by diffuse knapweed and alligator weed has led both species to be considered invasive in the US.