Choose the sentence in which the capitalized word is grammatically correct.  a.  africa no están tan grande como eurasia.      b.  el río más grande del mundo son en sudamérica.      c.  el príncipe estoy de sudamérica.      d.  era amigo de la princesa de india

The correct sentence is D: Era amigo de la princesa de India.

Explanation:

The correct sentence is D: Era amigo de la princesa de India. This means: He was friend of the princess of India. The tense used is the imperfect. The imperfect in Spanish doesn’t have an equivalent in English; it’s translated using the simple past or the expression “used to”. The imperfect is used to talk about situations in the past which beginning and end aren’t relevant or precise. It’s also used to talk about past actions that get interrupted by some other action in the past as well. Sentence A is incorrect because the verb should be “es”.  Sentence B is incorrect because the verb is plural and it should be singular: “es” instead of “son”. Finally, C is incorrect because the verb should also be “es”.