Which of the following is considered a primary need necessary for an adequate standard of living?

An adequate standard of living is fundamentally based on essential needs that support health and well-being. Food is a primary need because it is critical for survival, energy, and overall physical health. It meets one of the most basic requirements for human existence, ensuring that individuals have the nutrition necessary to function effectively and maintain their quality of life.

In contrast, the other options, while they may enhance comfort or convenience, do not constitute primary needs. Access to the latest technologies and mobile phones, for example, fall into the category of wants rather than needs; they can improve communication and access to information but are not essential for survival. Similarly, expanding social networks can contribute to one's emotional and social well-being, but they are not crucial to achieve the basic level of functioning that food provides. Therefore, food stands out as the clear choice for a primary need necessary for an adequate standard of living.