Final answer:
Foreshadowing suggests that future story developments will arise from the stolen lock mentioned. While it hints at the lock's importance, more context is needed to define what exactly it predicts.
Step-by-step explanation:
The use of foreshadowing in a passage implies that there will be future developments in the story linked to the event mentioned. If a passage states that 'The lock appears to have been stolen...', it suggests a future revelation or incident involving that lock. For example, option A hints that Ellery Queen might examine the locker, signifying that the stolen lock is a clue in a larger mystery that the detective might unravel. On the other hand, option B, C, and D do not directly relate to the act of the lock being stolen but hint at other peripheral details or issues. Without more context, it's challenging to determine which option the foreshadowing definitively supports, but it generally indicates that the theft of the lock will play a crucial role in the unfolding narrative.