Final answer:
The main line of the garment is described as its silhouette, which defines its overall shape and the outline it creates against the body. Patterns and material choice further contribute to the garment's final appearance.
Step-by-step explanation:
The term used to describe the main line of the garment is d) Silhouette. The silhouette of a garment refers to its overall shape and the outline it creates against the body. This concept is crucial in the design and production of clothing, as it sets the foundational structure for the piece. Patterns and the material of the fabric also play significant roles in shaping the garment and contributing to its final appearance. Patterns, which can be described by their attributes such as being colorful, faded, sharper, or curved, are essential in textiles. They bring unity and aesthetic value to the fabric, influencing the visual impact of the garment. Costume technicians use patterns to create costumes that fit the actors perfectly and match the designer's vision, iterating through mockups before finalizing the costume.