All of the itens fit into the same category EXCEPT: 
“Weights and Measures laws in the US represent approximately 50 percent…” APPROXIMATELY is closest in meaning to 
Choose the item which is a measure: 
In “Here’s $100 to make sure” MAKE SURE is closest in meaning to: 
According to the previous text, judge the following items.
The word ‘changing’ (l.13) conveys the idea that threats are constantly evolving.
Among the many tasks, mentioned in the third paragraph, a police officer may perform in the line of duty, is to “secure evidence”. The phrase means, in Portuguese, the same as 
No trecho do último parágrafo – Police officers must be available for shift work at any time of day and any day of the week, including holidays. –, a palavra em destaque transmite a ideia de 
Judge if the translation suggested in each of the following items is grammatically correct and maintains the meaning of the original text.
“The ensuing revelations and Snowden’s flight to Russia infuriated the Obama administration” (l.13 and 14) = As revelações subsequentes e o vôo de Snowden para a Rússia deixou Obama furioso.
Indeed in “Indeed …it remains a hands-on industry.” introduces a(n): 
The opposite of “deep” in “very deep water” is: 