Select the INCORRECTLY spelt word.

Occesion

The incorrectly spelled word is "Occesion." The correct spelling is "Occasion."

Here's an explanation for each option:

1. Occesion: This is the incorrectly spelled word. The correct spelling is "Occasion," which refers to a particular event, happening, or time.

2. Humorous: This is the correctly spelled word. It means being funny or causing laughter.

3. Mysterious: This is the correctly spelled word. It describes something that is difficult to understand, explain, or interpret.

4. Scissors: This is the correctly spelled word. It refers to a cutting tool with two sharp blades joined by a pivot that allows them to be opened and closed.