Select the wrongly spelt word.

Relagate

The wrongly spelt word is "Relagate" (Option 3).

Explanation:

1. Refurbish: Correctly spelled. It means to renovate, repair, or restore something to a better condition.

2. Residue: Correctly spelled. It refers to the remaining or leftover part of something.

3. Relagate: Incorrectly spelled. The correct spelling is "Relegate." It means to assign or move something to a lower or less important position or category.

4. Retrospect: Correctly spelled. It means to look back or reflect on past events or experiences.