Step 1: Identifying the solid.
The given solid appears to be a combination of cubes and cut surfaces. To count the total number of surfaces, we need to account for both the exposed and cut surfaces.
Step 2: Analysis of options.
- (A) 21: This is an underestimation of the number of surfaces.
- (B) 23: This is the correct answer, accounting for all exposed surfaces.
- (C) 25: This is too high, as not all surfaces are exposed.
- (D) 27: This is too many surfaces for the given solid.
Step 3: Conclusion.
Thus, the correct answer is (B) 23.