I dont see what your question is?? do you have to answer the question or translate it?
Answer:
¿Está trabajando en el jardín?
Explanation:
In this exercise, you have to complete the sentence using the present progressive tense. The <u>Spanish present progressive</u> tense is also called present continuous tense and it is used to talk about something that is happening now.
In the sentence given, you have to write "está" and not "estás" because "Ud." means "usted" and is the formal "tú". "Está trabajando" is the second person formal singular present progressive form of the infinitive verb "trabajar".
The last one is grammatically incorrect it should be comió