What is defined as an assortment of designs offered by one designer or manufacturer?

The term that describes an assortment of designs offered by one designer or manufacturer is "Collection." In the fashion industry, a collection typically refers to a cohesive grouping of apparel or accessories that embody a specific theme or concept, often aligned with a particular season or trend. A collection can include various styles and pieces that reflect the designer's aesthetic vision and can be presented during fashion shows or showcased for retail.

On the other hand, while "Fashion Line" might seem similar, it often refers to a broader range of products or the entire offering of a specific designer or brand, rather than a singular, thematic assortment of items like a collection. The term "Brand" refers to the overall identity of a designer or manufacturer and encompasses all of their offerings, not just a specific grouping of items. "Style Guide," meanwhile, serves as a reference tool for understanding design elements, color palettes, and styling suggestions, but it does not represent a specific assortment of designs. Thus, "Collection" is the most accurate term in this context.