An engineer chooses to use bamboo as a building material because it grows quickly and needs little space to grow. This is an example of

Green design is the correct answer

Explanation:

Green design is a method of constructing buildings that are healthy, comfortable and buildings are created by this approach reduces the harmful effects of the construction on the human health and environment.

In the green design method, eco-friendly substances are used for construction.

Green design does not generate waste and it improves and enhances the environment.

your picture is not part of the scientific method.