Final answer:
The statement about the guitars being made from certified wood indicates the use of environmentally sustainable and legally harvested wood, often checked by organizations like the FSC.
Step-by-step explanation:
The statement "All the guitars are made from certified wood" suggests that Gomes's workshop uses environmentally sustainable woods in its guitars. This is because certified wood typically refers to wood certified by organizations such as the Forest Stewardship Council (FSC), which certifies wood that has been harvested sustainably and legally. The certification process ensures the wood is from forests that are managed to meet the social, economic, ecological, cultural, and spiritual needs of present and future generations.