To determine how the author develops ideas about how the tragedy could have been avoided and who was responsible, it is important to consider the main factors discussed in relation to the sinking (e.g., design flaws, operational decisions, communication failures, etc.) and who is ultimately held accountable for those factors.
A. mentions the ship's size and points blame at the captain, suggesting a focus on his decisions regarding the ship's capacity and navigation.
B. discusses the failure to use the wireless telegraph for warnings, which places blame on the operators for not effectively communicating risks.
C. highlights the hull and watertight compartments, assigning responsibility to the builders for the structural integrity and design of the ship.
D. emphasizes the lack of awareness among the crew regarding the iceberg, suggesting that the lookouts bear the brunt of the responsibility for not identifying the dangers in time.
The choice that aligns most closely with the ideas presented and the development of responsibility would depend on the specific arguments and data employed by the author in the text. However, if the text heavily focused on operational failures and communication breakdowns, then option B or D might be more compelling. If it discusses design flaws and accountability in construction, then option C would be relevant.
Please provide more context or specific excerpts from the text you're discussing to allow for a more accurate determination!