Concept:The word “posh” means stylish, elegant, or luxurious, so its opposite would describe something simple or unpretentious.
Explanation:“Posh cars” are expensive and grand in appearance.
The sentence implies that these grand cars were placed between two cars of a contrasting, simpler kind.
Among the options, “rickety” means shaky, “rugged” means rough, and “dented” means damaged.
Only “modest” means plain, simple, or unassuming, which is the most nearly opposite to “posh.”
Answer:C. modest