Israeli injured in shooting at Karni crossing; Islamic Jihad militant killed in Gaza

What is the primary focus of the introduction section?

• The etymology of 'No'.

• How to say 'No' in different languages.

• The significance of 'No'.

• The history of the word 'No'.

In which context might 'No' be used?

• To refuse or deny something.

• To indicate a positive response.

• To express agreement.

• To show enthusiasm.

What is a practical application of saying 'No'?

• To set personal boundaries.

• To express gratitude.

• To agree with a statement.

• To accept an invitation.