Which information is crucial to gather during a site survey?

Gathering customer requirements, existing infrastructure, and potential obstacles during a site survey is crucial because it provides a comprehensive understanding of the environment in which the service will be delivered. Understanding customer requirements helps ensure that the solution aligns with client expectations and needs, allowing for a tailored approach that meets their specific goals.

Evaluating the existing infrastructure is essential because it informs the technician about what is already in place, helping to identify compatibility with new technology and reduce unnecessary costs due to redundant installations. Additionally, identifying potential obstacles, such as physical barriers, signal interference, or regulatory issues, is key to planning an efficient installation process. Addressing these factors upfront can minimize complications during execution, leading to a smoother installation and better service outcome. Thus, option B encompasses all the critical elements needed to ensure an effective and successful implementation of services for the customer.