<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.
All of these options are the preterite form of the verb leer in Spanish. Here is how it is conjugated:
1. yo leí 1. nosotros leímos
2. tú leíste 2. vosotros leísteis
3. él/ella/Ud. leyó 3. ellos/ellas/Uds. ley<span>eron
You need the third person singular, which is he, or </span>él in Spanish. So, the correct form for that person is leyó.
Thus the correct answer is No leyó las señales.
