Nora es la secretaria del escritor saúl soto. ella habla español e inglés. cada día saúl escribe mucho en sus libros y ella los traduce. roberto también trabaja para el señor saúl. él es un arquitecto que construye casas para el señor soto. roberto y nora son hermanos. él estudió en parís y ella en londres. hay otro trabajador en esa casa. es luis, el jardinero. ¿en qué trabaja roberto? él es arquitecto él es carpintero él es doctor él es ingeniero

The answer to the question: ¿En qué trabaja Roberto?, taking into account the text is:

Explanation:

The translation of the paragraph is below:

- Nora is the secretary of the writer Saúl Soto. She speaks Spanish and English. Every day Saul writes a lot in her books and she translates them. Roberto also works for Mr. Saúl. He is an architect who builds houses for Mr. Soto. Roberto and Nora are brothers. He studied in Paris and she in London. There is another worker in that house. It's Luis, the gardener.

To answer the question: What does Roberto work on? You should only pay attention to the total number of people mentioned in the paragraph and their different roles, the people mentioned there are four and are:

About Nora is told in the paragraph that she is the secretary of Saúl Soto, while mentioning that Saúl is a writer, finally, it is named that Luis is a gardener, so Roberto is spoken in the fourth and fifth sentence of the paragraph, where it is mentioned that Roberto works for Saul, making some houses since he is an architect, so the correct option is "Roberto es arquitecto".