I think 'easy' is a bit subjective (pun intended). Ultimately, what one person finds easy may be what another finds difficult and vice versa. This is going to sound super cliché, but as someone in year 12 myself this is what I've figured out over these past two or so years.
The easiest subjects are the ones you enjoy the most. Sure, that being said someone who enjoys maths is bound to find further 'easier' than specialist and whatnot. However, what I have found is that enjoying a subject and finding it interesting makes it so much more easier to study. Enjoying a class makes it much more easier for you to engage in class, understand and learn the content, and it even makes it easier for you to get motivated to study or do homework (believe it or not). This probably isn't the answer you were looking for, but as someone who has 'been there, done that' when picking subjects I'd definitely like to emphasise picking the subjects you enjoy/are stronger at as you'll most likely find them to be the 'easiest'!
