Step 1: Understanding the Concept:
The question requires classifying 'wealth' as either a stock or a flow variable. The key difference lies in the time dimension of measurement.
\begin{itemize}
\item A stock variable is measured at a specific point in time.
\item A flow variable is measured over a period of time.
\end{itemize}
Step 2: Detailed Explanation:
Wealth refers to the total value of assets (like money, property, investments) that a person or entity owns at a particular moment. For example, one might say, "As of December 31, 2024, my wealth was ₹10 lakhs." It is a snapshot at a point in time.
In contrast, income is a flow variable because it is measured over a period, e.g., "My income for the year 2024 was ₹5 lakhs."
Step 3: Final Answer:
Since wealth is measured at a specific point in time, it is a stock variable. Therefore, option (B) is the correct answer.