First of all, <u>"</u><u>Prevention is better than cure</u><u>"</u><u>.</u>
In real life,
If you have enough knowledge to help the injured person then you can do so. Minor injuries can be cured by anyone who has knowledge in human health often known as First Aid. This helps in solving minor situations.
But for major injuries, you have to be a doctor or can only be treated by professionals who is specialized in a certain field, such as medicine.
The answer is either B or C I think the answer is B
They are both highly selective,most of the time what binds to them. Think of it as a lock and key, if the key fits the lock and it turns then it does what it needs.