Need RC advice. Just a few days from my test

hello rainfall,
you forgot to mention how do you tackle RC and what's your general approach to such questions.
what i think is you should follow the mapping method which is:
1. reading the first paragraph and writing the main idea of the paragraph in your own words
2. reading the first line of each paragraph and write it down in your own words
3. reading the last sentence of the last paragraph.

by doing the above you get a better understanding of the paragraph, structure and a general idea where to look in detailed questions.

after that just go through the questions and decide if you need to read more about something and if so where.

the whole purpose of RC is to fill your head with unnecessary details and confuse you.
there is no use in reading the whole passage.

in 4 days it will be a little hard to comprehend but let me know if you need more guidance.

i suggest you also look here:
how-to-destroy-reading-comprehension-passages-by-rhyme-30247.html