Which of the following best describes a common carrier?

A common carrier is defined as a transportation service that offers services to the general public. This means that they are obligated to transport goods for anyone who requests their service, as long as they comply with the payment terms and other regulations. Common carriers are typically regulated by government authorities, which ensures they operate in a manner that is fair and non-discriminatory, providing equal service to all customers regardless of their individual needs or backgrounds.

The distinction lies in the nature of the service provided. Unlike private carriers that may transport goods only for specific clients or private individuals, a common carrier maintains the responsibility to serve all who seek its service, thus promoting accessibility and fostering competition in the market. This principle supports the foundational concept of ensuring that transportation services are available to a broader audience rather than being restricted to select parties, making it essential to understanding business practices in transportation and logistics.

In contrast, options that mention transporting only private goods, serving a specific clientele, or varying charges by client do not capture the essence of a common carrier's obligations, which emphasize inclusivity and standard pricing structures as a condition of service.