Para el la actividad vista en esta imagen
that is for the activity seen in this image btw
Miguel fell to the floor in the past, which means that the eating also happened in the past. Therefore Horacio y Fernando ate in the past - we need a past tense.
almorzábamos is for first, not second person plural, so it's ungramatical.
<span>almuerzan is present tense.
From the options, the best one is </span><span>almorzaron, but actually you should rather use a continuous tense - almorzaban. </span>
