Question

Read the following sentence

compro la gasolina en la estacion de servicio

substitute "la gasolina" with a direct object pronoun and explain why you used the pronoun you did

Answer 1

La compro en la estación de servicio.
La is the direct object pronoun in this case to refer gasolina. It is not an article.

Answer 2

Our sentence is:

Compro la gasolina en la estación de servicio

So a direct object pronoun replaces a direct object, that is a noun that directly receives the action of a verb in a sentence. Moreover, direct object pronouns in Spanish agree in number and gender with the nouns they replace.

In our sentence, La gasolina is the direct object because it receives the action of the verb. Since La gasolina stands for the third person singular (feminine form), we need to use the direct object pronoun that matches this person, which is la. Therefore, the new sentence is:

La compro en la estación de servicio