If I had had enough money, I ... that ring. Choose one option: bought; would buy; would have bought; would had bought.

Перевод задания: Если бы у меня было достаточно денег, я бы купил(а) это кольцо.

Правильный вариант: would have bought (купил(а) бы).

Используется Third Conditional: If + Past Perfect — would have + причастие прошедшего времени.

Ответ: would have bought