Free market economies offer distribution methods for goods and services based on .
government
trade-offs
price

Free market economies offer distribution methods for goods and services which are based on price. 

The main advantage of such economies is mostly that they don't at all rely on the government or any trade-off but let the varying price and market itself dictate everything. 

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

producing or giving rise torelating to or engaged in the production of goods, crops, or other commodities.

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.

Okay perfect i'll be sure to do that lol