Change the following sentence into a negative sentence: alguien está en la puerta. o a. algo está en la puerta. o b. nada está en la puerta. o c. no hay nadie en la puerta. o d. no hay nada en la puerta. submit

C.) No hay nadie en la puerta.

Explanation:

Alguien está en la puerta.

Translation: Someone is at the door.

"Alguien" is an undefinite pronoun to refer to an undetermined number of people. When it is stated that someone is at the door, it is affirming that there are an unknown number of people at the door.

To convert this sentence into negative, we have to use another indefinite pronoun to refer to the non-existence of people at the door.

Nadie está en la puerta.

Translation: Nobody is at the door.

The option with this same meaning is C) No hay nadie en la puerta, that translates to "There is no one at the door".

undetermined number: alguien → somebody → someone

non-existence: nadie → nobody → no one

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undetermined number: algo → something

non-existence: nada → nothing