Final answer:
The specific occupation of Esther's father in the book 'Resistance' is not provided in the reference information; Jews held various professions including being doctors, teachers, and more, and they engaged in different forms of resistance during the Holocaust.
Step-by-step explanation:
In the book Resistance, Esther's father's occupation during the war is not explicitly stated in the provided reference information. However, discussing this in a broader historical context, it's important to know that Jews held a variety of professions during the wartime period, such as doctors, teachers, and small-business owners. It's also worth noting the diverse forms of resistance Jews partook in, including cultural, spiritual, and active armed resistance.
Understanding the historical background provided helps us better comprehend the context in which the book is set, although it does not give us a specific answer to the question of Esther's father's occupation. Interested students should refer directly to the text of Resistance for detailed information regarding specific characters and their roles.