Correct Answer: VISCIOUS

Solution : The fourth option is the correct choice.

The incorrectly spelled word is viscious. The correct spelling is vicious, meaning cruel, aggressive, or deliberately harmful. There is an extra consonant 's' in the incorrect spelling.

The meanings of other options are as follows:

• Stilettos means high-heeled shoes or knives with a long, slender blade.
• Bewilders means to confuse or puzzle.
• Unforseen means not anticipated or expected.

Therefore, the correct answer is viscious.