A legend is a caption, a title or brief explanation appended to an article, illustration, cartoon, or poster.
A key is an explanatory list of symbols used in a map, table, etc.
Basically means that if you tell the truth sometimes it can turn into a unexpected good thing
Explains that when the whole world seems to not be on your side that your real friend will be there by your side through thick and thin and understand you
Don't quote me on this, but it might be C
