Select the option with the correct spelling that can replace the underlined word in the given sentence. If the spelling in the given
sentence is already correct, choose Option 'No replacement required'.
The pernacious effects of smoking often remain hidden until it's too late.
Show answer & explanation
Correct answer: A
Explanation
The correct spelling of the word meaning 'having a harmful effect, especially in a gradual or subtle way' is 'pernicious'.