The correct option is D Package the dry bananas with traces of potassium permanganate
Let us assess the options one at a time, shall we?
Wrapping the bananas in plastic sheets will leave no means for the ethylene gas produced by the fruits to escape. With this move, you ll be very quickly put out of business.
I am not sure if you have tried this. Putting the bananas (even raw ones) inside a freezer completely spoils the texture. Bananas will no longer taste good and there will be no takers!
I don’t know which is more suicidal – option a or c. Plucking the raw bananas earlier than usual is no help at all. Your business is doomed!
Now, let us look at what option d does. Packaging the raw bananas with traces of potassium permanganate helps oxidize the ethylene produced. This extends the shelf life by nearly 4 weeks! Voila. You make profits without going nuts… errr bananas!