The equivalent capacitance of a network depends on the specific arrangement (series or parallel) of the capacitors shown in the figure (which is not provided).

General Rules:

1. Parallel Combination: The equivalent capacitance is the sum of individual capacitances: $C_{eq} = C_1 + C_2 + \dots$. For two identical capacitors $C$ in parallel, $C_{eq} = 2C$.
2. Series Combination: The reciprocal of equivalent capacitance is the sum of reciprocals: $\frac{1}{C_{eq}} = \frac{1}{C_1} + \frac{1}{C_2} + \dots$.

Given the correct option is $2C$, and assuming the individual capacitors have capacitance $C$, the configuration likely involves two capacitors connected in parallel.