The development of ideas about how the tragedy could have been avoided and who was responsible is best represented by:
B. by explaining that the hull and watertight compartments had not worked as promised, and blame mostly belongs to the builders.
This option addresses a systemic failure in the design and construction of the ship, emphasizing how the builders' decisions directly contributed to the tragedy. It suggests that had the ship been built to more reliable standards, the disaster might have been averted, thus attributing significant responsibility to the builders.