Q. New lightweight materials have replaced traditional ones . . . . . . . . for certain special uses.
✅ Correct Answer: (A)
except
Explanation: 'Except' can be a preposition or a conjunction. As a preposition, 'except' means but. Hence it makes the sentence meaningful.
Explanation by: Team MCQ Buddy
'Except' can be a preposition or a conjunction. As a preposition, 'except' means but. Hence it makes the sentence meaningful.