Answer: Sofía reagateó el precio del huipil cuando lo compró
Explanation: Here the sentence that wee need to complete is:
Sofía _____ el precio del huipil cuando lo ______
A translation of this is:
Sofia____ the price of the huipil when she ____
So we are talking in past here, so is safe to use the perfect tense or "Preterito perfecto"
The options for the first blank are:
(regateo, regateas, regateaba)
where the verb is regatear, wich means haggle.
The options in a past conjugation are "Regateo" and "Regateba", here the correct one is "Regateo", because is in perfect tense, and this means that the action has already ben ended.
The second options are:
(compró, compraria, compraste)
Where the verb is comprar. which means "buy"
The option in perfect tense is the first one, "compró"
The full sentence is:
Sofía reagateó el precio del huipil cuando lo compró
