Final answer:
The word 'aspiring' means 'desiring and working to achieve a particular goal'
Step-by-step explanation:
The word 'aspiring' in the given sentence means 'desiring and working to achieve a particular goal'. It suggests that the hundreds of individuals have a goal to become pet detectives and are actively working towards achieving that goal. In this context, Albrecht has trained these individuals who aspire to become pet detectives.
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