Correct Answer: KNOWLEDGE

Solution : The first option is the correct choice.

The correctly spelled word is knowledge, which means information, understanding, or awareness acquired through experience, education, or study.

The meanings of the other options with their correct spelling are as follows:

• Lihgtning: The correct spelling is lightning , referring to a sudden flash of light in the sky, often during a thunderstorm.
• Occassion: The correct spelling is occasion , meaning a particular time or instance of an event.
• Millenium: The correct spelling is millennium , which refers to a period of one thousand years.

Therefore, the correct answer is knowledge.