The most famous and oldest of the Towers customs is the Ceremony of... a)Changing the...

Question

The most famous and oldest of the Towers customs is the Ceremony of...
a)Changing the Guard
b)Mounting the Guard
c)the Keys
d)Trooping the Colour

Answer 1

Я,к сожалению,ответа не знаю,но ты можешь перевести это всё и найти ответ на русском языке.

Answer 2

I think "c" is correct variant