ALTERNATIVA 3: Analise o fragmento abaixo: "Fomos nós que fizeram todas as pesquisas, sem orientação".

We perform research by our own without the help of others.

Explanation:

"We were the ones who did all the research, without guidance" means that we are those people who perform all researches and experiments without any experts or guidance of other people. We done all the experiments by our own without the help of other people which is a very hard work so our work is more precious and based on hardworking than those people who perform researches in the guidance of experts.