In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.

Question: The reaction in which a vinyl halide or aryl reacts with a terminal alkyne in the presence of cuprous iodide and a Pd (0) catalyst is known as the reaction of:
Options: <1> Suzuki <2> Heck <3> Stille <4> Sonogashira. <5> Sharpless.
4