When should evidence be quoted or paraphrased?

What offres the advantages of drawing conclusions quickly without testing every possible example

1. in which sentence is the underlined portion a predicate nominative? for astronauts, going into space to repair orbiting equipment becomes a challenge. for astronauts, going into space to repair orbiting equipment becomes tricky. for astronauts, going into space to repair orbiting equipment becomes challenging. for astronauts, going into space to repair orbiting equipment becomes frequent.

Which statement about conducting formal research is false? you should avoid electronic sources such as databases and websites. you should use short sentences and abbreviations to take notes. you should gather information from several different sources. you should use note cards and source cards to keep track of your sources.