Through line (5)
I believe the answer is:
theme
(Other definitions for theme that I've seen before include "(Writer's) topic" , "Subject (on which person writes, speaks)" , "essay" , "Short melody" , "issue" .)
I believe the answer is:
theme
(Other definitions for theme that I've seen before include "(Writer's) topic" , "Subject (on which person writes, speaks)" , "essay" , "Short melody" , "issue" .)