Who were the three people that worked for Dahl at the Dar es Salaam house?

The correct choice highlights the specific roles of the cook, the gardener, and Dahl's boy, which align with Dahl's description of his household staff in Dar es Salaam. This combination reflects the essential functions they served in contributing to his daily life, from preparing meals to maintaining the garden and assisting him personally.

The other options do not match the roles as accurately described in Dahl's narrative. For instance, while cooks and gardeners are common household positions, the term "apprentice" or "butler" does not reflect the specifics of Dahl’s accounts. This context helps clarify why the selected answer is the most fitting representation of his household during that time.