Correct Answer & Explanation
Option D
• The sentence implies a decision to delay an event. 'Defer' means to postpone (an action or event) to a later time.
• 'Defray' means to pay expenses.
• 'Defile' means to make something dirty or impure.
• 'Deficient' means lacking.
• 'Default' means failure to fulfill an obligation.
• Thus, 'Defer' is the most suitable word.