Question

question 25
although the silver carp was originally imported into the united states in 1973 to help with plankton control, this fish is now considered harmful to the environment because it competes with other species that feed on plankton. the department of agriculture has made it illegal to import or export this pernicious animal without a permit.
what is the meaning of the word pernicious as used in the passage?
overly common
marine
destructive
docile

Explanation:

The text describes the silver - carp as harmful to the environment as it competes with other species. The word "pernicious" is used to emphasize its negative impact. "Destructive" best captures this meaning among the given options.

Answer:

C. destructive