Questões de Concurso Para analista de projetos - econômico-financeira

The sentence ‘But constant negativity can also get in the way of happiness, add to our stress and worry level and ultimately damage our health.' (l. 02-04) could be paraphrased only by the following:

Choose the alternative that presents a synonym to the underlined word in the context below:

“But with practice you can learn to disrupt and tame negative cycles.” (l. 13).

If we add the prefix '-UN’ to some words in English, we can get the opposite of that word, like in ‘unwanted’ (l. 29). In this sense, consider the following words and analyze them:

I. able.

II. happy.

III. fair.

IV. acceptable.

Which of them can be an opposite just by adding the prefix ‘-UN’? 

Which of the following questions can be answered based on the text?

Choose the alternative that best completes the blanks in the text, following 1 to 4 order.