Why Is It Important for Experiments to Be Externally Valid

question 39

Multiple Choice

Why is it important for experiments to be externally valid?

• A) so that we know that the results of our studies have significance beyond the situation in which they were conducted.
• B) so that we know which variables influence which other variables.
• C) so that others do not have to duplicate our work later.
• D) so that we can control extraneous variables

---

Definitions:

Source Reduction

Strategies and practices aimed at reducing the amount and toxicity of waste generated, often by altering the design, manufacture, or use of products and materials.

Sustainable Agriculture

Farming practices that maintain and improve the environment, economic profitability, and social equity for future generations.

Renewable Energy

Energy that is collected from renewable resources, which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat.

Hydropower

The generation of electricity by harnessing the energy of flowing or falling water, considered a renewable and sustainable source of power.