Pelicans swimming around in pool at IL's Brookfield Zoo

The video begins with a welcome back message to the audience, followed by a discussion about observing the lens.

How does the speaker start the conversation?

• Alright.

• Let's begin.

• Thank you for coming.

• Let's get started.

What is the duration of the greeting 'Hi, welcome back.'?

• 1 second

• 2 seconds

• 3 seconds

• 4 seconds