Explain the changes that milk undergoes when suitable starter/inoculum is added to it. How does the end product formed prove to be beneficial for human health ?

Answer :

Lactobacillus / lactic acid bacteria (LAB) present in inoculum , grows in milk at a suitable / optimum temperature, multiplies converting milk to curd, produce acids that coagulate and partially digest the milk proteins.
This improves its nutritional quality by increasing Vitamin B12 , LAB check diseases causing microbes in our stomach