Changes in our gross domestic product can be most directly attributed to (select all that apply.) securities owned by employees of certain companies through stock purchase plans more restrictive insurance regulations ready credit for middle class mortgages steady growth of manufacturing jobs

I think the answer to this would be:

This is because Gross Domestic Product is the measure used to estimate the monetary value of all the finished goods and services. So when more people are working, more products and services are created. In addition to this, since people have work then they have income to purchase products and services in the country.

bility-to-pay taxation is a progressive taxation principle that maintains that taxes should be levied according to a taxpayer's ability to pay. This progressive taxation approach places an increased tax burden on individuals, partnerships, companies, corporations, trusts, and certain estates with higher incomes.