The correct options are
A Production of curd, cheese, cocoa
B To treat abdominal discomfort
C Production of leavened fodder
Lactobacillus convert sugars (lactose) to lactic acid and starts the formation of curd. Their live cultures are added into eatables. These eatables are healthy as they kill harmful bacteria like Clostridium in alimentary canal, making our gut healthy. Therefore, these are usually recommended in cases of abodminal discomfort or diarrhoea. Fodder given to cattle is fermented with the help of Lactobacillus.