Which phrase indicates the completion of a significant transition in Tim's life?

The phrase "To hand over the business" indicates a significant transition in Tim's life because it implies a transfer of responsibility and ownership from Tim to another individual or entity. This action represents a completion of his role in the business, marking a clear change in his professional responsibilities and status. Handing over a business typically involves substantial preparation and signifies that Tim is moving on to a new phase in his life, whether that be retirement, pursuing other interests, or embarking on a new venture.

In contrast, the other choices focus on ongoing actions or involvement with the business. "To finalize the business" suggests completion of tasks but does not inherently indicate a personal transition. "To manage the business" and "to invest in the business" imply continued engagement and responsibility on Tim's part, lacking the definitive transition that handing over the business represents. Therefore, the option that best captures a significant life change is the one that describes the divestment of his role and a movement towards a new chapter in Tim's professional journey.