Different cultures have different ways of raising their children. For example, in USA, we are disrespectful to our parents (admit it we all have) but it other cultures like India, Parents are stricter and kids are more respectful
The only cure is rest. Antibiotics don't work because these are viruses and cold medicines help with symptoms so you feel a bit better but rest is really the only cure.
Horomones im not sure what are the options of answers