The correct response regarding the cultural significance of dominoes to people in the Spanish-speaking world is:
They are an important connection to the past.
Dominoes have a rich history and are often associated with social gatherings, family bonding, and traditional games in many Spanish-speaking cultures. They serve as a way to connect with cultural heritage and foster community ties. While they may also facilitate outdoor activities and provide opportunities to practice numbers, their primary cultural significance lies in their role as a link to tradition and the past.