I believe the correct is the third option. It is important to preview sources before using them in your research because it reveals deeper concepts. Reading deeply the sources would allow you to have a deeper understanding of the sources and determine which parts of the sources are useful to your research.
Cause they spent all their money at the bar trying to impress the 22 year old girl who turned out to be a man
I am the light -noun
You light up my world-verb
I like you-verb
What would you like -noun
No, you always need to provide a citation.
Is this a question or ? explain a bit more.