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: The president chooses who will be prime minister
Explanation:
France has a President and also has a Prime Minister. It is the responsibility of the president to appoint the prime minister.
The president holds the highest office and us regarded as the head of state. The prime minister has real power in government as the French Parliament is his responsibility.
Answer: Subjective Method
Explanation: Assigned probability based on judgement or assertion is termed as Subjective. Subjective probability relies on an individual's personal perception or idea that an event will occur or otherwise. Subjective probability isn't based no any thorough research, scientific finding or market analysis, It is purely based on individual judgement and therefore it differs from one individual to another.
For instance, if an individual opines that it will rain tomorrow without accessing weather or any related information, then it's a subjective judgement.