What kind of relationship is this?

difference:opposite

antonyms

synonyms

degree of intensity

classification and type

material used and end product

A ... antonyms? I don't really understand the question, but antonyms do line up with "difference" and "opposite".

C). Classification and type.

Explanation:

The kind of relationship between 'difference' and 'opposite' display is classification and type, as 'difference' is a broader term while 'opposite' demonstrates its type. 'Difference' implies a characteristic of something that makes it distinct which could be due to importance, opposition, construction, function, composition, etc. On the other hand, 'opposite' is mere a type that demonstrates contrary or conflicting ideas. Thus, the relationship could be categorized as classification and type which makes option C as the answer.