ANDWER -
This is an example of appropriate technology, which is technology that is designed to meet the specific needs of a particular community or culture in a way that is both sustainable and environmentally friendly. In this case, the small-scale coffee farmers are using bicycles, which are a common and accessible mode of transportation in their community, to power machines that help them with their coffee bean processing. This approach is more sustainable than using fossil fuels to power the machines, and it also allows the farmers to work more efficiently and productively.