Utilize the input text as a context reference, choose the right relationship between fresh and retail from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

The main Saudi stock index has plunged 12 percent this month as local retail investors dump shares in response to a fresh slide of oil prices, which has slashed the government's oil revenues, and high valuations of shares, which have deterred foreign investors from buying.

Answer: industry