The correct answer would be : by contrasting the image of a sleek, modern train with old-fashioned forms of transportation
Explanation:
On the top left you see various means of transportation that are not as convenient to travel short or long distances, such as the man riding a horse, and the carts. These images give off a very old-fashioned vibe as these were common means employed in the 1900s and even before This is in stark contrast to the train dominating the poster -showing off its elegance and hinting at luxury and modernity.