I believe the correct response would be B. To list the consequences of your options.
Answer:
Environmental sanitation
Environmental sanitation encompasses the control of environmental factors that are connected to disease transmission. Subsets of this category are solid waste management, water and wastewater treatment, industrial waste treatment and noise pollution control.
Water
Water is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms. It is vital for all known forms of life, even though it provides no calories or organic nutrients
Air
Walk, bike, carpool, or take public transit.
Reduce heating needs by making your house more energy efficient. Say no to wood fire burning.Use hand-powered or battery-operated garden tools. Know before you go. Check your tire pressure. Reduce, reuse, and recycle!Be idle-free.
There are 5 groups in the vertebral column. In order they are called
1) Cervical
2) Thoracic
3) Lumbar
4) Sacrum
5) Coccyx
The 4th group contain 5 bones and once you are in the adult phase,
roughly at about 26 years, the 5 bones fuses into one bone which shrink
the number of bones the vertebra column have but but does not lose in
size.
not a 100 % sure hope this helps