CLEAN : Thousands march the streets of Berlin against 'rent madness'

The video tutorial briefly discusses the concept of a toy gun and mentions optical elements.

What was the main topic discussed in the first section of the video?

• A new technology

• A toy gun

• The importance of listening

• Optical illusions

What was the speaker's attitude towards the toy gun?

• Curious

• Excited

• Indifferent

• Disappointed

Which of the following was briefly mentioned in the second section?

• A new invention

• Optical

• A historical event

• A famous person

What is the likely reason for the mention of optics in the video?

• To change the subject

• To introduce a new topic

• To conclude the discussion

• To provide an example

How many sections were there in the video?

• Four

• One

• Two

• Three