Final answer:
Scale is another word for size in design, referring to the relationship between parts of an image and the whole, while proportion refers to the relationship between different elements within the design. Thus, the correct option is 1.
Step-by-step explanation:
The term scale is another word for size in design, which is option 1. Scale in design is the relationship of parts of an image to the whole image, or to an external reference point.
For example, it determines how the size of a figure of a king compares to the size of his servant within the same image or a statue in comparison to an actual person. Proportion, on the other hand, refers to the relationship between items in a design, such as between the sky and mountains in a painting. Proportion ensures that each part of the design fits well with the others in terms of size.
Harmony in design comes from the correct scale and proportion, helping to create a cohesive and aesthetically pleasing outcome. Thus, the correct option is 1.