撰
サン, セン, せん.する, えら.む, えら.ぶ

composing, editing, compiling, selecting

JLPT0 G13 S0 F5000

As per 巽# (arrange in formation) + 手 hand/action indicator → collect and arrange (writings) → *compile* writings → *write*; *compose* (← write/compose for compilation). *Select* is a borrowed meaning via 選.

[Full Kanji Etymology List]