Twinkle twinkle little star always works, though it isn’t recent
The answer to this question is D. Ancient egyptians are so cool!
Naive?Simple?Made of simple elements?
My interpretation of this is that the author was hoping for something futile - they 'grew a flower' (put effort or hopes toward) that can't be bloomed (is pointless or futile, will not produce anything) that can't come true (their effort/hope is just a hopeful dream). Basically, the author hoped for something that was not possible.