~なの (nominalizer after na-adjective)

The combination ~なの after a na-adjective: the na-adjective copula な plus the nominalizer の, creating a noun phrase 'a (X) one' or 'the (X) one.' Examples: 静かなのが好き ('I like quiet ones'), きれいなのを選ぶ ('choose a pretty one'), 簡単なのにする ('go with the easy one'). Distinct from sentence-final なの (the casual explanatory particle, often feminine-coded) — that one ends a clause; this one modifies a referent.