Nhận biết (M1)

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.

• 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.

• Hydrilla is an invasive species of aquatic plant that crowds out native plants and impedes aquatic navigation.

• It was first introduced to the US to be used in aquariums.

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

• A.

  Diffuse knapweed is an invasive species of aquatic plant, and hydrilla was first introduced accidentally through seed contamination.

• B.

  Hydrilla is an invasive species that crowds out native plants and impedes aquatic navigation, causing environmental harm.

• C.

  Diffuse knapweed was first introduced accidentally through seed contamination, but it now crowds out livestock forage and native plants.

• D.

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