Which of the following is INCORRECTLY spelled.

The word Necesary is spelled incorrectly. The correct spelling is Necessary.

Here are the words and their correct spellings:

• Occupation means the work that a person does for a living.
• Passport is a document that allows a person to travel to other countries.
• Necessary means essential or indispensable.
• Piano is a stringed musical instrument played by striking the strings with hammers.