Final answer:
Option C is correct, as parts falling and striking workers is a significant risk in pre-cast concrete construction. Despite advancements in technology, construction sites inherently pose various hazards, and while strict safety measures can reduce these risks, they cannot eliminate them entirely.
Step-by-step explanation:
The question asks which statement about hazards of parts falling and striking workers during pre-cast concrete construction is most true. Among the given options, option C) Parts falling and striking workers is a significant risk in pre-cast concrete construction is the most accurate
Even with advanced technologies like computer-aided machines and robotics that enhance accuracy and reduce human error, there are inherent risks in construction sites. It is crucial to follow strict safety protocols to mitigate these risks. However, adequate safety measures can minimize but not completely eliminate the possibility of parts falling and striking workers, making option B inaccurate. Both options A and D falsely suggest that there are no risks, which contradicts the very nature of construction work where hazards are always present.