gr$5$fm$10$t$\mathrm{.}07\mathrm{.}017$

Zereth buys leather goods to sell in her shop from a supplier overseas. Recently, it was found that this supplier underpays its workers and has hazardous working conditions. As a result, many customers are refusing to buy this brand. In response, Zereth discontinued that line and replaced it with a local line. Zereth responded to external forces for change in which environment?