The Relative Clause is “who are five in number”. It is a type of dependant clause (it need the main clause in order to convey its meaning properly) that has the same function of an adjective; that is to say, it modifies a noun “friends”.
Abuelos significa grandparents
The correct answer is: sometimes.
Advertising sometimes changes the usage of a word. It provides a different meaning or connotation to a word to get the audience attention. In other words, they have to convince people to buy what they are selling, their product.
Moreover, changing the usage of a word in the advertising world is only a tool. It isn't something that always happens, or that hardly ever happens.
