Final answer:
In the context of Vaudeville, the term 'dough' refers to money. It represents the earnings performers made while touring, and the correct answer is a) Money.
Step-by-step explanation:
The term dough in the context of a Vaudeville tour refers to money. Vaudeville was a theatrical genre of variety entertainment in the United States and Canada from the early 1880s until the early 1930s. Performers on the Vaudeville circuit would travel from one engagement to the next, and the 'dough' they were discussing was the payment or earnings they received for their performances.
The correct choice is a) Money, which means that when someone talks about making 'a lot of dough,' they are referring to making a substantial amount of money. This kind of slang is commonly used in colloquial English and was especially popular in the era when Vaudeville was prominent.