Which of the following explains why requests for information are a common technique for gathering foreign intelligence?

Requests for information are considered a common technique for gathering foreign intelligence primarily due to their combination of cost-effectiveness, simplicity, and the potential for yielding results over time. Engaging in such requests often requires less investment compared to other more resource-intensive forms of intelligence gathering, like surveillance or technical means. The straightforward nature of these requests enables intelligence agencies to engage with foreign entities without attracting significant attention or escalating tensions.

While immediate results can be appealing, the nature of intelligence gathering often requires patience and persistence, as establishing relationships and acquiring useful information can take time. Additionally, the process can lead to valuable insights and a deeper understanding of foreign operations, motivations, and capabilities, making it a strategic advantage in the long run. This multifaceted approach is what makes requests for information particularly effective in the realm of intelligence work, correlating with the choice that highlights the combination of these attributes.