Queen Elizabeth II and Prince Philip in Edinburgh, Scotland

The video describes the queen's arrival at Edinburgh Castle, escorted by the Household Cavalry and Royal Scots Greys. Upon arrival, she is met with a traditional challenge. The narrative then shifts to unexpected reactions and a command of mental state, culminating in a formal presentation of keys to Her Majesty.

What was the role of the Household Cavalry during the queen's arrival?

Who escorted the queen to the castle?

What was the traditional challenge that the queen was met with upon her arrival?

What can you infer about the mental state of the people during the queen's arrival?

What did ABBA formally present to Her Majesty?