What happened to Mrs. Starch's husband?

The correct answer is that Mrs. Starch's husband moved to Plano, Texas. This detail is important as it highlights a significant change in their living situation, possibly affecting Mrs. Starch's life and perspectives. The mention of the specific city, Plano, Texas, suggests a deliberate choice made by Mrs. Starch's husband, implying a move that could hold emotional or practical implications for both him and Mrs. Starch. This context allows readers to infer potential reasons for the move, such as job opportunities, personal relationships, or lifestyle changes.

The other options present alternative scenarios, such as her husband being deceased, living in a zoo, or working abroad. These options differ fundamentally, as they suggest more drastic situations or ridiculous circumstances that do not align with the more grounded choice of relocation. Therefore, identifying the move to Plano, Texas, captures a realistic narrative while reflecting on the dynamics of their relationship.