Answer:
Scaled structure
Explanation:
A concrete model is a model that is in fact a physical representation of something. The opposite is an abstract model, which is not a physical representation. Theoretical, conceptual, and computer models are all abstract models.
Scaled structure (scale model) is a three-dimensional physical representation of an object that preserves accurate relationships between all of its important aspects.
I would say that the writer is using either personification or metaphor. However, I find B. personification to be the most logical answer.
B) Problem and Solution
We can suggest this as the correct answer because of the hint words 'issues', 'conflicts' and 'resolved' in the question, as they are synonyms or related to the words 'problem' and 'solution'. ☺