<em>Algunos </em>translates to "somethings"
<em>Algunas </em>translates to "somethings, but in feminine"
<em>Alguien </em>translates to "someone"
But <u>a</u><u><em>lgo </em></u>translates to "something"
Therefore <em>algo</em> is the correct answer.
Answer:
¿(Decir) tú la verdad? ((Say) you the truth?)
A: Dirías (you would say)
B:Diré (I will say)
C:Diría (Would say)
D: Dirás (You will say)
The grammatically correct answer would be C:Diría