Which of the following is NOT considered engagement in land surveying practice?

Engagement in land surveying practice generally refers to being actively involved in conducting surveys or providing related professional services. Options A, B, and D all involve aspects of professional engagement in surveying.

Working full-time for a mineral development company indicates a direct involvement in the application of surveying skills, especially if the role includes conducting or overseeing surveys related to mineral assets. Conducting surveys as an independent contractor clearly shows engagement, as it entails providing surveying services directly to clients outside of a fixed employment structure. Offering services to various clients also exemplifies engagement in surveying practice, emphasizing the professional and commercial aspect of surveying work.

In contrast, surveying as an employee of a mining business might not always be viewed as engagement in land surveying practice in the broader sense, particularly if the employee's role does not involve actual survey work. Thus, this option could imply a more operational or non-professional application of surveying knowledge rather than actively engaging in the practice of surveying itself. This distinction helps to clarify why it does not fit the criteria of being considered part of land surveying practice like the other options do.