Choice Ahoice D is the correct answer.

1. Start with the equation: $\frac{x}{5} + 3 = 8$
2. Subtract 3 from both sides: $\frac{x}{5} = 8 - 3$
3. Simplify: $\frac{x}{5} = 5$
4. Multiply both sides by 5: $x = 5 \times 5$
5. Simplify: $x = 25$
6. Verify: $\frac{25}{5} + 3 = 5 + 3 = 8$ ✓

Choice Ahoice C is incorrect because this results from adding 3 to 8: $11$, then $11 \times 5 = 55$. Wrong inverse operation.

Choice Ahoice B is incorrect because this results from dividing 5 by 5: $1$. We need to multiply.

Choice Ahoice D is incorrect because this results from adding 3 to 8: $11$, then dividing by 5: $11/5 = 2.2$.