Jose is Carlos's father. Carlos has two uncles, Marco and Luis. Marco has a son named Diego. Maria is Carlos's sister. Explain how Diego and Maria might be related to Jose and Carlos, respectively. Also, explain why Luis is not Maria's father.
Provide a very brief response.
Diego is the son of Marco, who is one of Carlos's uncles. This makes Diego Carlos's cousin. In relation to Jose, since Marco is his brother, Diego is Jose's nephew.

Maria is Carlos's sister. Since Jose is Carlos's father, he is also Maria's father. Therefore, Maria is Jose's daughter.

Luis is not Maria's father because the information provided states that Jose is Carlos's father and Maria is Carlos's sister. If Maria is Carlos's sibling and has the same father, then her father must also be Jose, not Luis. Luis is another one of Carlos's uncles, which makes him Maria's uncle as well, and not her father.