The correct answer is B. prevent oxidation
Oxidation is bad for the wine, while sedimentation is regular. Speed of fermentation has nothing to do with oxygen.
Answer:
If air is polluted, the air contains harmful gases and health status become poor. In contrary, if environment is clean and fresh, the health will be good. Therefore, health, population and environment education are interrelated in physical aspect. Health, population and environment are integrated terms.
