Which of the following is NOT an aspect of Starbucks' ethical sourcing practices?

The correct choice highlights that sabotaging competitors is not an aspect of Starbucks' ethical sourcing practices. Ethical sourcing is fundamentally about fostering positive relationships and support within the coffee supply chain, which includes practices like ensuring fair wages for farmers, supporting local communities, and promoting environmental sustainability. These elements reflect a commitment to social responsibility and ethical conduct, which are core to Starbucks' business philosophy.

In contrast, sabotaging competitors would directly contradict the principles of fairness and integrity that underpin ethical sourcing. Engaging in such behavior would harm relationships across the industry and could damage the reputation of the brand. Therefore, it stands out as an incorrect answer when considering what constitutes ethical sourcing practices.