The income and living standards of a nation will increase when?

a. jobs are protected and total employment expands.

When they work hard for their Goals.

 

The living standards depend on the individual income and the general economical stability. One of the most important factors that will affect that is the availability of income resources (JOBS), and of course the continuity of this source. 

So I believe option is A is the most important one

Simple answer. Option B & C are seriously unfavourable, while D seems to be ok, but even if availability of the goods and service people value increases,

My answer is option "D"............

Whenever the Credit standard increases and so the consumer spending increase, but D. is close enough.

Simple answer. Option B & C are seriously unfavourable, while D seems to be ok, but even if availability of the goods and service people value increases, but the income and employment has to be protected at the foremost. People have to earn first to spend. Supply without demand, where purchasing power of the consumer is significantly low is dreadful. Hence option A is the best answer. Thank You!

It will Increase when prices of commodities fall

d. the availability of goods and services that people value increases.

Income and living standards of a nation are ties to its GDP or GNP, which is a direct result of its productivity. Countries that have high employment rates and sustainable jobs add to the GDP, thus increasing personal wealth, disposable income, which in turn is used to purchase goods and services. Some of these goods and services are consumed locally and some are exported allowing the country to earn foreign exchange, which could be used to re -invest in growing business or saved in a sovereign wealth fund  for a "rainy day".