Correct Answer & Explanation
Option C
• The question asks for a word that means 'to make something dirty or no longer pure, especially something sacred'.
• 'Defray' means to pay for expenses.
• 'Deficient' means lacking something essential.
• 'Defile' means to make something dirty or no longer pure, especially something sacred, aligning with its definition: 'contaminate, pollute, profane, desecrate'.
• 'Defer' means to postpone or delay.
• Therefore, 'Defile' is the correct answer.