CLEAN : Beijing and Shanghai airports quiet as virus fears persist

The video tutorial introduces the concept of 'holding' and briefly discusses its application.

What is the main focus of the first section?

• The importance of making quick decisions

• The significance of holding a position

• The benefits of changing plans frequently

• The concept of immediate action

What does the term '2nd' likely refer to in the context of the video?

• A primary choice

• A secondary option or follow-up action

• An unrelated concept

• A mathematical term