Final answer:
The best description of France's government according to the constitution of 1791 is Constitutional monarchy. Hence the correct answer is option B
Step-by-step explanation:
The best description of France's government according to the constitution of 1791 is Constitutional monarchy. The Constitution of 1791 established a system where the monarchy still maintained executive powers, but the power of the king was defined and restricted by the constitution. The document called for an elected parliament and guaranteed the fundamental rights of the citizenry.
Hence the correct answer is option B