USA: The Prince and Princess of Wales visited the climate tech startup Greentown Labs in Somerville

The video begins with expressions of gratitude, setting a positive tone for the content that follows.

What is the basic way the speaker expresses gratitude?

• Cheers.

• Much obliged.

• Thank you.

• I appreciate it.

How does the speaker enhance their expression of gratitude?

• By saying 'I owe you one.'

• By saying 'Thank you very much.'

• By saying 'Thank you so much.'

• By saying 'Thanks a lot.'