Final answer:
Courtney, working at a mid-century modern furniture store, is most likely to show a customer a sleek stackable teak chair in keeping with the design elements characteristic of mid-century modern furnishings.
Step-by-step explanation:
Given the context of the family-run furniture store where Courtney works, which specializes in mid-century modern furniture, she is most likely to show the customer a sleek stackable teak chair. Mid-century modern design is known for its clean lines, integration of different materials like wood and metal, and functional forms. The options such as an orange velvet chair might be more indicative of a 1970s style, an ornate, carved silver chair could suggest a Baroque or Rococo influence, and a blocky geometric chrome chair could align with modernist Bauhaus principles but may not fit precisely within the mid-century aesthetic. Instead, Courtney would likely showcase a chair resembling the simple, yet elegant designs of the era, mirroring the aesthetic seen in classic pieces like the 'Ant Chair' or designs by Marcel Breuer.