Which of the following is not a traditional Puerto Rican instrument? maracas cuatro guiro crwth

The maracas, cuatro and the guiro are all traditional Puerto Rican instruments. They are instruments usually played at a parranda. A parranda is a festival of singing that happens around Christmas time. The crwth however is an ancient string instrument similar to a violin. This instrument is commonly associated with Welsh or Celtic music and with English folk music.