Correct Answer: (d) shall most definitely
Solution:'Shall most definitely' should be used in place of 'can't most definitely'.- The phrase 'even if used to express something will happen, would happen or would have happened in any case or condition.
- This conjunction emphasizes that a specific situation will continue no matter what happens.
- The first sentence is negative and the presence of 'Even' provides us with a hint that the latter part will be positive.
- Hence, option d is the correct answer.