Green computing practices aim to reduce environmental impact by lowering energy use, minimizing e-waste, and extending hardware life cycles. One of the most effective practices is to extend device life through reuse and refurbishment. This prevents premature disposal, reduces demand for new hardware manufacturing, and lowers overall environmental impact.
Option B: Incorrect-prioritizing high performance can increase energy consumption and is not necessarily sustainable.
Option C: Incorrect-economical hardware does not always mean environmentally sustainable.
Option D: Incorrect-recycling is important, but refurbishment and reuse extend usable life and reduce waste earlier.
Thus, the IT practice that best supports green computing is extending device life with reuse and refurbishment.
Reference:
WGU Information Technology Management - IT Sustainability and Green Computing, section on Extending Equipment Life.