Most Confusing Words and Their Usages: Directions: In the following items, there are two sentences (S₁ and S₂) each containing a word. Choose the option that correctly completes both sentences in the same order.S₁: The company will ______ the old machines. S₂: Please write the letter on your official ______.

‘Replace’ = substitute (✔ S₁). ‘Letterhead’ = printed heading on stationery (✔ S₂). Others incorrect or misspelled. The correct answer is 'replace/letterhead' as it fits both sentences. Option B) 'replace/letter head' is incorrect. Option C) 'repace/letterhead' is incorrect. Option D) 'replace/latterhead' is incorrect.