Aryl halides can be prepared by

The Sandmeyer reaction is a way to make aryl halides. A diazonium salt interacts with copper (I) bromide, copper (I) chloride, or potassium iodide in a Sandmeyer reaction to produce the corresponding aryl halide.

A common method for producing aryl halides from aryl diazonium salts is the Sandmeyer reaction, a kind of substitution process. Catalysts for this reaction include copper salts with chloride, bromide, or iodide ions.

Hence, the correct option (D). 1 and 3