Answer:
b is the answer
Step-by-step explanation:
bcz in this big world many people work hard for their family.
In the night duty people get tired but also never stop working.For earning more and more money people even don't get time to eat food.i don't really think 50,000 people get injured bcz i think more than 50,000 people get injured but some people even get too much injured and die .I really hope people don't take their work too seriously.