Reversed wiring requires both switches in matching Z2 position Steps:

• Original setup lights lamp with switches in opposite positions via crossed travelers.
• Reversing X and Z connects supply to Z and routes X through the second switch, swapping traveler logic to require same positions.
• Trace paths: supply enters at Z; second switch (Y common) must connect to Z2 for matching traveler.
• First switch must then connect X to Z2 to complete path to lamp via shared Z2 wire.

Why D is correct:

• Both to Z2 aligns travelers, closing circuit from supply at Z through Z2 to lamp, following reversed two-way switch logic.

Why the others are wrong:

• A: Y1 and Z1 mismatch travelers, leaving path open.
• B: Y1 and Z2 select opposite travelers, no connection.
• C: Z1 and Z2 use different travelers, circuit incomplete.

Final answer: D