To solve the equation \(2(x + 3) = 5x - 2\) using the most efficient method, the first step would be to apply the Distributive Property to the left-hand side of the equation, resulting in:
\[ 2 \cdot x + 2 \cdot 3 = 5x - 2 \]
This simplifies to:
\[ 2x + 6 = 5x - 2 \]
Therefore, the correct answer is 1 for Distributive Property.