Solve the expression (11+17)-4.

To solve the expression (11 + 17) - 4, you first need to carry out the operation inside the parentheses.

Adding 11 and 17 gives you a sum of 28. This is the first step of the calculation. Now, with the result of 28, you then proceed to subtract 4.

Performing the subtraction: 28 - 4 equals 24.

Therefore, the correct answer is indeed 24, which matches choice B. This step-by-step approach—first adding the numbers inside the parentheses and then subtracting—should be applied in expressions with multiple operations to ensure accuracy.