Answer:
<em>The invisible hand concept</em>
Explanation:
The invisible hand concept is a metaphor which describes the actions of a person who performs certain tasks for his own benefit but his actions also lead to being a help for the public or a society.
In the scenario, mentioned in the question, Sergio wanted to earn a nice amount of profit for himself by setting up a consulting business. In his effort to do this, he benefited the society by helping them with their computer problems. Hence, this is an example of invisible hand concept.
Answer: chief executive
Explanation:
The chairmen of all the Panchayat Samitis under the district are the ex officio members of Zila Parishad
Drinking water in the community means that many people would dispose of waste in a bad way, they would create more pollution which is bad for the marine life, etc.
I think they could be solved if everyone could just follow the guidelines by recycling or doing good for the earth.
You need a strong military, strong education, dependable citizens, and also your own language