i will really appreciate if provided with correct answers for the following business law questions

1) Alfred Marshal, famous economist contributes mainly in the field of ________

2) Who firstly introduced "Liquidity of Preference theory"?

3) The term water in economics deals with ____________

4) The term "Technology "is defined in economics as _________

5) In which theory "Marginal Productivity theory "deals with?

6) Price determination is studied traditionally. What is it called?

7) The word 'Invisible hand 'in economics is defined as

8) To Influence consumers a producer, have to spend money. This is an example of

9) Whose opinion is 'Rent is a creation of value' not of wealth?

10) The concept" Representative Firm" is introduced by __________