Answer:
Option C: line
Step-by-step explanation:
An organization always has a functional structure. Its structure are group into sectors or structure based on specific areas, such as finance, or marketing and others.
A line department is a part of organization structure that is responsible for an organization core work such as production and sales, and others.
Product designers are simply said to be individuals who have design skills or knowledge and therefore uses it along with their technical know-how/knowledge to develop or improve the outlook(way) that already-made (existing) products work and look, and/or make them at a lower cost.
They must have technical and human-centered design and also be actively involved in the designing process of a new products line.