For questions 61-63, the options (A-D) were not visible in the provided image. Based on the context of the passage, here are the most appropriate terms to fill the blanks:

For questions 61-63, the options (A-D) were not visible in the provided image. Based on the context of the passage, here are the most appropriate terms to fill the blanks:

61. Economic growth refers to the increase in the country's ______ over a period of time.

• Step 1: Economic growth is fundamentally about the increase in the production of goods and services within an economy. This is often measured by the increase in a country's overall output or national income.
• Step 2: The most fitting general term to describe this increase in economic activity is output or income.

The most appropriate term is $\boxed{\text{output}}$ or $\boxed{\text{income}}$.

62. It is computed by using the ______, which represents the total value of goods and services produced within a country.

• Step 1: The phrase "total value of goods and services produced within a country" is the precise definition of Gross Domestic Product.
• Step 2: Therefore, the blank should be filled with Gross Domestic Product (GDP).

The most appropriate term is $\boxed{\text{Gross Domestic Product (GDP)}}$.

63. A factor that influences economic growth is ______ as it helps to increase...

• Step 1: Economic growth is influenced by various factors that enhance a country's productive capacity. These include investment in capital, technological advancements, and improvements in human capital (education and skills). The phrase "as it helps to increase" suggests a direct contribution to production.
• Step 2: Without specific options, common and highly relevant factors include investment, education, or technology.

The most appropriate term is $\boxed{\text{investment}}$, $\boxed{\text{education}}$, or $\boxed{\text{technology}}$.