Which of the following is a traditional drink of some parts of southern India, made by fermenting sap from palms?

Indian curd is prepared by inoculating milk with:

Which process is used to obtain products like cheese and yogurt?

Which of the following bacteria is useful in the preparation of Idli?

Assertion $(A)$: Consumption of buttermilk after a meal is beneficial.
Reason $(R)$: $LAB$ (Lactic Acid Bacteria) protects the stomach from harmful bacteria.

Which of the following food items are produced by the process of fermentation?