The answer would most likely be joking
Answer:
The legal obligation to safeguard others from harm while they are in your care, using your services, or exposed to your activities
Explanation:
For example: The school's duty of care towards its pupils
The letter states that the city council has a duty of care to road users to ensure that crossings are properly controlled.
I'm pretty sure it is physical and mental development
It's the last answer, number 4.
You have to breath normally during a stretch.