Translation of "Safest" in Japanese

Silence... is the safest strategy.

‎沈黙が最善の防御策だ

What's our safest way down the waterfall?

滝を下るのに安全なのは？

Night is the safest time to nest.

‎夜のほうが安全に産める

Which way is our safest route to find Dana?

どっちの道が安全かな？

Which route is our safest bet to find civilization?

文明を見つけるには どっちが安全？

This is when many small creatures feel safest to emerge.

‎夜のほうが安全だと ‎考えてるようだ

Probably the safest thing to do. I know where this rope has been.

このロープは安全(あんぜん)だよ

The guerrillas could never be completely defeated, but Suchet made Aragon the safest and best-run

ゲリラを完全に打ち負かすことはできませんでしたが、スーシェはアラゴン

If I was going to the African continent where would be the safest and most sanitary place?

アフリカ大陸のどこかへ行くとしたらどこが一番衛生的で安全ですか？