Final answer:
The first Roman roads were not characterized by being easy to build; they were time-consuming, expensive, and labor-intensive. They were constructed with concrete and stones, demonstrating Roman engineering skill.
Step-by-step explanation:
The correct answer to the question is d) Easy to build. The first Roman roads were not easy to build; they were extremely time-consuming, expensive, and labor-intensive to construct.
Roman roads were enduring structures built with concrete and stones, designed to last and provide reliable infrastructure for the empire. Romans were skilled at engineering, and their ability to build roads allowed them to expand their empire and facilitate efficient communication, transportation, and trade.