ЗАДАНИЕ 9 Выберите один из нескольких вариантов Finally, ______ a pinch of salt.

The correct word to complete the sentence is 'add'. The sentence should read: 'Finally, add a pinch of salt.' This is a common phrase used in cooking instructions. The options 'fry' and 'mix' do not fit grammatically or contextually in this sentence.

Finally, add a pinch of salt.