On a construction drawing which of the following best describes a b-b elevation A. Top elevation
B. Front elevation
C. End elevation
D. Bottom elevation

What best describes a b-b elevation on a construction drawing is:

B. Front elevation.

Explanation:

Construction elevations are depictions of how the finished construction work will look when viewed from different angles.  Specific angles have different types of elevation.  There are front elevations, side elevations, rear elevations, and split elevations.  A front or entry elevation shows the side of the house from the entrance door, windows, or front porch. This side of the house usually faces the street road with a front yard.