what should be used to transfer a roof opening layout from the floor to the roof?\nsteel tape\nplumb…

Brief Explanations:

A plumb - bob is used to establish a vertical line. It can be used to transfer a layout from the floor to the roof as it helps in aligning vertically. A steel tape is for measuring lengths, a speed square is for marking angles and cutting lines, and a builder's level is for ensuring horizontal or level surfaces.

Answer:

B. plumb bob