diplomacy has never experienced any kind of changes in its a...

Statement is WRONG. Questão ERRADA.

From the text:

"But nowadays, its scope has widened to
cover the whole range of government business in a global society"

"ITS" refers to DIPLOMACY.

e-

The core activities have remained the same, but this doesn't account for the whole array of work that diplomacy has to undertake, which, according to the passage, has undergone alterations in its scope regarding socio-economical issues. 

A questão restringe muito o propósito do texto; houve mudanças no cenário representativo da área, o que contradiz a afirmação da questão.

In the second paragraph, the widening (aumento) of the scope is a change to the activities of diplomacy.

gabarito: errado

Professores: Mark Hughes e Anthony Rosenberg

kind: tipo