Final answer:
Unable to provide an accurate response without the relevant text from 'The Hawk that Dare not Hunt by Day', that shows Uncle Jack's response to Tom's career-related request.
Step-by-step explanation:
The question appears to be related to the book 'The Hawk that Dare not Hunt by Day' by Scott O'Dell. However, the passages provided do not pertain to this book; therefore, I cannot provide a factual and accurate response about Uncle Jack's reaction to Tom's request that would help him in his career as it is not included in the information given. To provide an appropriate answer, specific details about the interaction between Uncle Jack and Tom from the correct text would be required.