The piece of evidence that BEST supports the author's claim in the article "Genetically Modified Salmon Can Feed the World" is:
If used carefully, genetic engineering can produce fish that reach the market much faster such as AquAdvantage Salmon, and use less feed (fish meal).
This statement emphasizes the potential benefits of genetically modified salmon in terms of efficiency and sustainability, which aligns with the claim that genetically modified salmon can play a role in addressing global food needs.