What must be indicated regarding the "Basis of Bearings" on the drawing?

The correct choice emphasizes the importance of specifying the basis of control utilized in the survey drawing. This refers to the reference points or framework upon which the bearings are established. In land surveying, bearings relate to the direction of lines relative to a specific reference or control, often using established meridians or the north-south line as a reference. By indicating the basis of control, surveyors provide essential information about how the bearings relate to the Earth’s coordinate system, ensuring that anyone interpreting the drawing can understand the orientation of the surveyed property accurately.

Understanding the basis of control is critical for maintaining accuracy and consistency across different surveys and managing property boundaries properly. This can involve stating the datum utilized or the specific coordinate system, which is vital for future surveying, property disputes, and development planning.

The other options, while relevant to surveying in their own ways, do not directly address the foundational necessity of having a clearly defined basis of control for bearings, which is why they do not represent the best answer in this case.