The correct answer is: d) All of the above.
The National Bureau of Soil Survey and Land Use Planning (NBSS&LUP) is a government agency in the Philippines that is responsible for conducting soil surveys, soil research, and promoting sustainable soil management.
Soil surveys are conducted to map the distribution of soil types and their properties. This information is used to plan land use, develop agricultural practices, and protect the environment.
Soil research is conducted to understand the physical, chemical, and biological properties of soils. This information is used to develop new agricultural practices, improve soil management, and protect the environment.
Promoting sustainable soil management is the process of developing and implementing practices that protect and conserve soil resources. This includes practices such as reducing soil erosion, improving soil fertility, and conserving water.
The NBSS&LUP plays a vital role in ensuring the sustainable use of soil resources in the Philippines.