Rosie Fortescue, Oliver Proudlock, Holly Fulton, at London Celebrity Sightings on 1st July 2015 in London, England.

The video primarily promotes the Instagram account 'First Person Photos' by repeatedly mentioning the brand name. It serves as a marketing tool to encourage viewers to follow the account on social media.

What social media platform is mentioned in the introduction?

• LinkedIn

• Instagram

• Twitter

• Facebook

What is the main concept introduced alongside Instagram?

• First Person Photos

• Second Person Photos

• Third Person Photos

• Group Photos

Which concept is reiterated in the second section?

• Second Person Photos

• First Person Photos

• Group Photos

• Third Person Photos

What is the focus of the final section?

• Reiteration of Instagram

• Final emphasis on First Person Photos

• Introduction to Group Photos

• Introduction to Instagram

Which concept is consistently emphasized throughout the video?

• Second Person Photos

• Group Photos

• First Person Photos

• Third Person Photos