I do think it is C because it will always stay the same "Fixed"
I think 16 marks so C is the answer
Skills? I wouldn't say skills, but you think about what you red and write, you use what you know from your brain to basically understand words in a book or even when you write them down, etc. If this doesn't help, look up all the skills of reading and writing on google =)
Open minded worried, bold young ones
