Correct Answer & Explanation
Option A
• The sentence requires a word that means to pay for or cover expenses. 'Defray' means to provide money to pay (a cost or expense).
• 'Defile' means to make something dirty or impure.
• 'Deficient' means lacking.
• 'Defer' means to postpone.
• 'Default' means failure to fulfill an obligation.
• Thus, 'Defray' is the most suitable word.