Final answer:
In the context of the passage, 'predetermined' means that choices or events are 'set in advance' possibly by previous conditions or laws.
Step-by-step explanation:
The meaning of predetermined as used in the passage is best understood as set in advance. In the context of the experiments and discussions surrounding free will and determinism, the term reflects the philosophical concept that decisions or events are established, or pre-decided, by prior conditions or laws before they actually occur.
This touches on deep philosophical queries about whether our choices are genuinely free or whether they are influenced by an array of factors that virtually decide the outcome before we are even aware of making a choice.