Answer:
I'm not quite sure if it's a or d most likely it's a according to me if I'm wrong please tell me right away I would really like to help you good day.
-more textbooks to provide for every student
-school compulsory for up to 18 years of age
-more teachers so that classes are not crowded (and easier to teach with smaller classes)
-wider range of subjects available
-languages taught from a younger age e.g. English
True oxidation is the formation of rust so yes it is a chemical change
True, you want them to understand you as easily as possible and they will not know slang, etc. if they speak little english