Ripening of foods is caused by...

A)Bacteria
B)yeast
C)enzymes
D)moulds

I am going to say C. enzyme

Explanation:

Ethylene apparently "turns on" the genes that are transcribed and translated to make these enzymes. The enzymes then catalyze reactions to alter the characteristics of the fruit. The action of the enzymes cause the ripening responses.

Please correct me If I am wrong :)

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