In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
The life (1) ______ of a banana is a colourful one; it starts with a deep green, changes to a delicious yellow and ends at an unappetizing brown. Bananas, like most fruits, produce and (2) ________ with an airborne hormone called ethylene. This hormone helps to signal the ripening process. An unripe fruit is hard and acidic. It is likely to possess a greenish (3) ________ due to the presence of chlorophyll. When a fruit comes into contact (4) _________ ethylene, the acids in the fruit start to break down, it becomes softer and the green chlorophyll is (5) _______ and replaced, in the case of bananas, with a yellow hue.
Select the most appropriate option to fill in blank number 5.