Respuesta :
Answer:
Él es el jardinero
Explanation:
The paragraph metioned Luis in the last sentences, "Es Luis, el jardinero".
There you can read that states Luis is a gardener, which means "jardinero" in spanish.
The other workers are Nora and Roberto, they are brothers. Nora is the secretary of Saúl and Roberto also works for Mr. Saúl.
Therefore, the third option is correct.