CLEAN: Four African presidents head to I.Coast for mediation

The video tutorial introduces the concept of 'opening up' and emphasizes its importance.

What is the initial concept introduced in the video?

• Turn around

• Open up

• Close down

• Shut off

What is the main focus of the second section of the video?

• Closing strategies

• Opening strategies

• Further details on 'Open Up'

• Summary of the video

Which phrase is repeated in the video?

• Open up

• Close down

• Turn off

• Shut down

What is the duration of the first section?

• 1482 milliseconds

• 2000 milliseconds

• 2975 milliseconds

• 1000 milliseconds

How does the video conclude the concept?

• By closing the video

• By introducing a new topic

• By repeating 'Open Up'

• By summarizing 'Open Up'