Question

Many southern hemisphere countries that were slow to respond to the novel intensified their efforts

( ) decreased their efforts
( ) have mcoronavirus have stepped up their efforts
( ) Have inimized their efforts

Answer 1

A resposta e a segunda alternativa - have stepped up their efforts.

Vejamos como resolver o exercicio:

Acredito que para resolve-lo seja necessario escolher uma alternativa que contem uma expressao semelhante a da frase do enunciado.

Many southern hemisphere countries that were slow to respond to the novel intensified their efforts.

Traduzindo, temos:

Muitos países do hemisfério sul que demoraram a responder ao problema intensificaram seus esforços.

Vejamos as alternativas:

( ) decreased their efforts

( ) have stepped up their efforts

( ) have mimized their efforts

Traduzindo, temos:

( ) diminuíram seus esforços

(X) intensificaram seus esforços

( ) minimizaram seus esforços

Portanto a segunda alternativa e a correta.