Airways, roadways, railways, and waterways.
Internal humidity can be controlled by: removing moisture at source, for example, using an extract fan in the bathroom, using a rangehood in the kitchen, venting a dryer to the outside and using only externally vented gas heaters. passive ventilation by opening windows.
Answer:
Its either A or C
Explanation:
back in the days people where in a system called the Cast System in India. only the class that you were born in that is what you where. It was rare for someone to change their class if it was allowed. So im more leaning towards A