Answer:

1. Gross Domestic Product (GDP) is the monetary value of all finished goods and services made within a country during a specific period. GDP provides an economic snapshot of a country, used to estimate the size of an economy and growth rate. GDP can be calculated in three ways, using expenditures, production, or incomes.
2. A variety of measures of national income and output are used in economics to estimate total economic activity in a country or region, including gross domestic product, gross national product, net national income, and adjusted national income.
3. The Human Development Index (HDI) is a statistic composite index of life expectancy, education, and per capita income indicators, which are used to rank countries into four tiers of human development. A country scores a higher HDI when the lifespan is higher, the education level is higher, and the gross national income GNI (PPP) per capita is higher. It was developed by Pakistani economist Mahbub ul Haq and Indian economist Amartya Sen and was further used to measure a country's development by the United Nations Development Programme (UNDP)'s Human Development Report Office.
4. Body mass index (BMI) is a value derived from the mass (weight) and height of a person. The BMI is defined as the body mass divided by the square of the body height, and is universally expressed in units of kg/m2, resulting from mass in kilograms and height in metres.
5. Net attendance ratio is characterized as the proportion of the quantity of people in the official age-category going to any instructive foundation in a specific class-gathering to the total number of people in the same age-group.

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Explanation:

Gross domestic product (GDP) is one of the most common indicators used to track the health of a nation's economy. ... It represents the total dollar value of all goods and services produced over a specific time period, often referred to as the size of the economy.

A variety of measures of national income and output are used in economics to estimate total economic activity in a country or region, including gross domestic product, gross national product, net national income, and adjusted national income.

The Human Development Index is a statistic composite index of life expectancy, education, and per capita income indicators, which are used to rank countries into four tiers of human development.

BMI is a person's weight in kilograms (kg) divided by his or her height in meters squared. The National Institutes of Health (NIH) now defines normal weight, overweight, and obesity according to BMI rather than the traditional height/weight charts. Overweight is a BMI of 27.3 or more for women and 27.8 or more for men.

Net attendance ratio is defined as the ratio of the number of persons in the official age-group attending any educational institution in a particular class-group to the total number persons in the age-group.