Answer:
The righ answer is, D. Saltábamos.
Cuando éramos niñas, saltábamos la curda todos los días.
Explanation:
At the time of completing a sentence, it is important to identify the person and the time in which they are being raised, that way it is facilitated to us how we can conjugate the verb within the sentence.
-es mi companera de cuarto.ella es mi amiga
With the examples given, we do not know what "it" and "them" is that the speaker is referring to. Without stating what "it" is, the meaning of the sentence is unclear.
Hope this helps!!
1: Plural informal
2: singular familiar
3: between them
