To measure the level of production in the economy from year to year it is best to look at. To measure living standards in the economy from year to year it is best to look at.
To measure the cost of living in the economy from year to year it is best to look at.

1) the stages a new product goes through from beginning to end, i.e., the stages that a product passes through from introduction through growth, maturity, and decline. 2) the time from initial research and development to the time at which sales and support of the product to customers are withdrawn. 3) the period of time during which a product can be produced and marketed profitably.

                                          hope it

the answer would be price fixing, hope it