The relationships between the sizes of different parts of a work make up its a. mass b. volume c. proportions d. scale e. character

The relationships between the sizes of different parts of an object are called proportions. In fact, the term 'proportions' refer to the comparison between the different sizes of the object: it could be, for instance, the ratio between the different sides of a parallelepiped, written for example as a:b:c where a,b,c, are the sizes.