Final answer:
The Romans did not achieve the development of their Latin language leading to romance languages like Spanish and French.
Step-by-step explanation:
The correct answer is d) Their Latin language led to romance languages like Spanish and French.
While the Romans made many cultural achievements, the development of the Roman Latin language leading to romance languages like Spanish and French was not one of them. The Latin language itself was not an achievement of the Romans, but rather the precursor to the Roman Empire. It was the Romans who adopted and spread the Latin language throughout their empire, which later evolved into the romance languages spoken today.