Which daymark would typically indicate information about places to find supplies?

The square daymark is the correct choice for indicating information about places to find supplies. In the system of daymarks used in navigation, different shapes convey specific types of information. The square shape specifically signifies that there are facilities, such as stores or refueling stations, nearby. This characteristic makes it a crucial marker for boaters looking for essential supplies during their travels.

Other shapes convey different meanings. For example, a circle often indicates a safe water marker, advising that the path is clear. A diamond may indicate caution or a regulated area, while a crossed diamond typically warns of hazards or no entry zones. Understanding these symbols can significantly enhance a boater's navigational abilities and decision-making while on the water.