Given the reaction: this reaction is an example of a) fermentation b) saponification c)hydrogenation d)esterification

The given image shows a reaction between an acid and a alcohol that results in the formation of ester and water. This reaction is an example of Esterification reaction.

Here it can be seen that a acetic acid reacts with ethanol that forms ethyl ethanoate, that is an ester and water molecule that is H₂O. So this reaction is an example of esterification reaction.

nanotechnology is a powerful tool in biomaterials research as it creates numerous possibilities for the engineering of functional molecules. nano-bio refers to projected ability to incorporate biomimicry into various materials at nanoscale.  

the answer to your question is c