Final answer:
The first step in solving the equation is to distribute the 5, making option D the correct choice, which results in 5x - 10 - 2x = 2.
Step-by-step explanation:
The first step in correctly solving the equation 5(x-2)-2x=2 would be to distribute the 5 into the parentheses of the left term. This action aligns with option D where the distribution results in 5x - 10 - 2x = 2. Doing so simplifies the equation and sets it up for further steps such as combining like terms and isolating the variable.