"PLAIN" is an organization that wishes to influence governments from all around the world to change their documents so as to have them presented to people in plain language. They deem plain language as language that can easily be understood by everyone. The current state of affairs is that there are many tricky constructions and phrases which make the laws and documents unreadable by the common people.
Answer: skimming
explanation:
when you skim through a book, you’re not reading nor taking notes. so, that would be discarded.
next, taking notes and highlighting is a good strategy to read something.
playing the audio version isn’t bad in any way.
and lastly summarizing is an amazing strategy.
thus, the answer is skimming