Answer:
a
Explanation:
It's the only one that makes sense the way you wrote it. I'm assuming the part under A is the rest of the sentence.
The indefinite article would be el which is he in spanish because it ends with an o which means it is a male item
El loro de la condesa
Es un lorito muy sabio:
Sabe física geométrica,
Es geólogo y geógrafo,
Y doctor en aritmética.
A la gente que se para,
Le dice palabras raras:
Ético, genealógico,
Genético y exégeta
Gélido y astrológico
Hope this help
The answer for the blank is buscamos.