The environmental benefits of composting include all of following
a. reduced volume of material ending up in a landfill.
b. generation of rich organic fertilizer.
c. reduction in work force of waste management company.
d. reduced amount of methane generated in landfills.
e. reduced amount of energy needed to transport material to a landfill

B. generation of rich organic fertilizer.

Explanation:

Compost and fertilizers are different. There is a simple way to distinguish between compost and fertilizers.  Compost feeds the soil, and fertilizer feeds the plants. Fertilizer adds to the soil for nutrient supplying purpose to the plants. But compost helps to increase the microbial activities of the soil, which improves the health of the soil.