Question

Choose the answer that best completes the sentence.
El horno _____ en la cocina.
A.) estamos
B.) estoy
C.) está
D.) estás

Answer 1

"El horno" is third person singular, so you need a third person singular form of the verb.
Third person singular is "he, she, it."

Answer 2

In reference to 'el horno,' which of those three pronouns would be approrpriate?

Answer 3

está
El horno está en la cocina.
The oven is in the kitchen
Please ask in language not math next time :)