Select the INCORRECTLY spelt word.

Correct option is C

Option (c) Incomfortable is the incorrectly spelt word.
• Correct spelling is: Uncomfortable - It means causing or feeling slight pain or physical discomfort.
• Example: The chair was so uncomfortable that I couldn't sit for more than a few minutes.
Meanings of all the other given options:
• (a) Maintain: To keep something in good condition or to continue at the same level or rate.
• (b) Maiden: A young woman, especially an unmarried one, or the first in a series, such as a maiden voyage.
• (d) Unhappy: Not happy; sad or dissatisfied.