Final answer:
John Ruskin's stance on restoration was preservation. Restoration involves returning a site or objects to an earlier state through the use of non-original material.
Step-by-step explanation:
John Ruskin's stance on restoration was a. Preservation. Restoration generally involves returning a site or objects to an earlier state, often through the use of non-original material. It aims to preserve the original form, color, and texture of the site or object. Ideally, all added material is detectable and treatments are reversible.