Correct Answer: Structrure

Solution : The third option is correct.

The incorrectly spelt word in the given sentence is structrure. The correct spelling of the word is structure, meaning the arrangement or organisation of something.

Hence, the correct answer is structure.

Additional Information:

• Recently is spelt correctly and means in the near past.
• Brush is spelt correctly and can refer to a tool for painting or cleaning.
• Havoc is spelt and means great destruction or chaos.