I think the answer is les.
You say: Yo no sé o yo no lo sé
Answer: It would be A. But C sounds right too. Def not B tho.
Explanation: I speak spanish fluently :) Hope this helps!!!
Yo/ Me
Tú/ You
Elena y Felipe/ Elena and Felipe
Lourdes/ Lourdes it’s just a name I think
Nosotros/ Us
Linda y yo ESTAMOS aprendiendo...
