Vermi-processing toilet is beneficial because
a) It reduces the diseases
b) It increases soil fertility
c) Both a and b
d) It reduces electricity

Hint: Night crawlers convert human excreta into vermin cake that is a decent assortment of regular compost. They help in providing natural manure to increase fertility of soil.

Complete answer:
Setting up vermi-processing toilets includes the procedure where the human excreta is deteriorated by night crawlers and by other soil based worms. In this procedure the human excreta is changed into a cake of fertilizer, which can be utilized to build the richness of the soil.

This procedure of the executives of human excreta forestalls the ecological contamination and the illnesses as the human excreta is blended in with soil and forestalled by coordinated introduction of creepy crawlies and ailment-causing microorganism henceforth forestalls the infections in people and creatures.
Therefore, the answer is c, i.e., it reduces the diseases as well as increases soil fertility.

Additional information:
National parks, remote holiday cottages and resorts commonly use composting toilets.

Note:
Composting toilets do not require any connection of septic tanks or sewer systems unlike flush toilets. The fabric from composting bathrooms is a humus-like fabric, which may be appropriate as a soil amendment for agriculture. Compost from residential composting bathrooms may be utilized in home gardens, and that is the principle use.
Enriching soil with compost provides good sized nitrogen, phosphorus, potassium, carbon and calcium. In this regard compost is equal to many fertilizers and manures bought in lawn stores. Compost from composting bathrooms has a better nutrient availability than the dried feces that end result from a urine-diverting dry toilet.

Urine is normally present, despite the fact that a few is misplaced through leaching and evaporation. Urine can comprise as much as 90% of the residual nitrogen, as much as 50 percentage of the phosphorus, and as much as 70% of the potassium.
Compost derived from those bathrooms has in precept the equal makes use of as compost derived from different natural waste products, such as sewage sludge or municipal natural waste. However, customers of waste-derived compost ought to keep in mind the hazard of pathogens.