Step 1: Understanding the necessity rule.
The Indian Evidence Act provides exceptions to the hearsay rule when the person making the statement cannot be produced in court.
Step 2: Situations covered.
- When the person is dead or incapable of giving evidence.
- When the person is alive but cannot be brought without unreasonable delay or expense.
- When the person cannot be found.
Step 3: Conclusion.
Since all the above conditions are included, the correct answer is (d).