Gdp (gross domestic product) is supposed to indicate economic health because it is supposed to rise ?

Wealth in being created.

Explanation:

THe gross domestiv product is the quantity of wealth that a country is producing, meaning the products and services that a countries economy is producing and selling, it is the total of the money that a society in a country is producing, when it increases logically, but not always, the wealth of the common people should also increase.

the answer is a. the harappan civilisation is also called the indus valley civilisation, this is because they built their cities along the indus river. the reason behind this location can be found in the rest of the "old world" civilisations like mesopotamia or egypt, the first built their cities along the rivers tigris and euphrates, the second along the nil; : their respective civilisations thrived because the overflowing of their respective rivers produced favorable conditions for agriculture, their main support.