What is the full form of $LAB$?

Which vitamin content is increased by Lactic Acid Bacteria $(LAB)$ in milk?

Toddy is:
$I.$ $A$ traditional drink of Southern India.
$II.$ Made by fermentation of sap from palm trees by bacteria.
Which of the statements given above about toddy is/are correct?

What is the full form of $LAB$ in biology?

Which of the following food items are produced through fermentation by the microorganisms?
$(I)$ Idli $(II)$ Dosa
$(III)$ Toddy $(IV)$ Cheese

The large holes in Swiss cheese are due to the production of a large amount of $a$ by a bacterium $b$. Here $a$ and $b$ refer to: