Language spoken at home means the language that people talk in their houses. When you talk to your family or parents at home, you use a certain language to communicate with them. This is the language that you speak at home.
For example, if your family is from Mexico and they moved to the United States, they might speak Spanish at home. That means they use Spanish words to talk to each other instead of English. Sometimes, families who move to a new country might keep using their native language, even if they learn to speak another language. This is because they feel more comfortable speaking the language they grew up with.
People speak different languages at home depending on where they come from, what their culture is like, and what languages they know how to speak. It's very important to understand the language spoken at home because it helps people communicate with each other and understand their culture and traditions.