Necessary, Foregone
な adjective and の adjective
ひっし
子どもへの性教育はある時期では必至になると思うんですが、日本はそうした教育については通常どのように行われるんですか。
I think it’s necessary to teach kids sex education at some point, but how do people usually teach those things in Japan?
If it's certain that you will attain it, then it is inevitable. It is a foregone conclusion.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.