Answer:
The question ¿Qué necesitaba la tía? (What did aunt need?), is made in the spanish verbal tense: past imperfective or imperfect.
Where la tía (the aunt) is the 3rd person singular ella (she).
This means the verb necesitar (to need) is translated, according to the subject la tía, to the past imperfective in indicative mode to necesitaba (she needed).
Therefore, the answer is in the same verbal tense:
La tía necesitaba más flores.
The aunt needed more flowers.
The other forms of the verb necesitar do not match with the subject of the sentence because:
- necesitó (she needed), although is with the 3rd person singular is in preterite perfect simple
- necesitamos (we need) is in present with the 1st person plural
- necesitaron (they needed) is in preterite perfect simple with the 3rd person plural
