Question

Correct the underlined part of the sentence, if needed.
The mole is a nocturnal insectivorous mammal regarded as pests by gardeners because of their burrowing activity spoilinglawns and gardens

• A. regarded as pests by gardeners because of their burrowing activity spoiling
• B. regarded to be pests by gardeners because of their burrowing activity's spoiling
• C. regarded as a pest by gardeners because of burrowing activity spoiling
• D. considered as a pest by gardeners because of its burrowing activity spoiling
• E. regarded as a pest by gardeners because its burrowing activity spoils lawns and gardens

Answer 1

The correct option is E regarded as a pest by gardeners because its burrowing activity spoils lawns and gardens

Here, "The mole" is singular which requires singular pronoun "its" and not the plural "their" and using "considered" and "as" in the same sentence creates redundancy. Only option E rectifies these errors and does not create any new ones. E is the correct answer.