The systems in high-rise buildings that deliver water from the outside up to fire hose outlets on each floor are:

The standpipe system is the correct answer because it is specifically designed to deliver water from a source—often from a municipal water supply—up to the various floors of a high-rise building. This system consists of interconnected piping that provides access to water for firefighting operations at multiple levels of the building. Firefighters can connect hoses to standpipe outlets located on each floor, facilitating quick access to water during a fire incident.

The importance of standpipe systems lies in their ability to supply adequate water pressure and flow rate needed for effective firefighting, particularly in taller buildings where standard fire hydrants may not reach. Such systems often include both wet and dry variations, where wet standpipes are always filled with water and dry standpipes are only supplied with water during firefighting operations.

While options like dry bed or cistern refer to water storage concepts or systems that might be used in some fire protection strategies, they do not specifically pertain to the delivery of water in high-rise firefighting scenarios like the standpipe system does. Cross feed typically refers to a method of distributing water or resources between systems but does not directly describe a system that delivers water up to fire hose outlets.