The answer will be A ( Esta )
Form questions using inverted word order. Put the subject at the end.
La muralista <span>habrían</span> mejorado el aspecto de esta pared si hubiera pintado niños jugando.
'The muralist would've improved the aspect of this wall if she/he would have painted children playing.' - translation in my own words.
I hope this helped - Maria S.
The past participle can be combined with the verb “ser” to express passive voice
Answer:
It just says "The architect designs a house for you. The architect designs a house,"