The correct options are
A The economy of a country can be measured by the income of each citizen.
B If each citizen makes a good income, then the economy can be considered as a healthy economy.
D A cottage industry refers to a system of production where goods and services are produced at home.
A country's economy is dependent on all of its citizen. The contribution to our country's economy comes from the rural population, as well as the urban population.
A cottage industry refers to a system of production where goods and services are produced at home, and in small amounts; thus they are also referred to as small scale industry.