Answer - B - Lorenzo Ghiberti designed two sets of doors for the Florence Baptistery.
Key Takeaway: The Florence Baptistery a religious building in Florence, Italy. The Baptistery is one of the oldest buildings in the city, built in the Romanesque style sometime between 1059 and 1128. One of the most significant and notable aspects of the Baptistery are its three sets of bronze doors with their elaborate relief sculptures, two of which were designed by Lorenzo Ghiberti. Ghiberti's east pair of doors was later referred to by Michelangelo as "the Gates of Paradise."