Yo un burrito en el restaurante. como come comes comer

The correct answer is:  [A]:  "como" .

This is the correct conjugation of the Spanish verb, "comer" ("to eat") ; among the answer choices given; that corresponds with the Spanish subject pronoun, "yo" ("I") ;  that is, the single, first person subject pronoun.  

Choice:  [A]: "como"; refers to the "single, first person, simple present tense" conjugation of the Spanish  infinitive verb, "comer" (to eat).

The translation is:  "I eat a burrito in the restaurant." ; 
{and can be substituted for:  "I am eating a burrito in the restaurant." }.

Take note of the other answer choices given:

Choice  [B]:  "come" ;  would be the "single, third person, simple present tense" conjugation of the Spanish infinitive verb, "comer" (to eat).

Choice  [C]:  "comes" ; would be the "single, second person, simple present tense" conjugation of the Spanish infinitive verb, "comer" (to eat).

Choice  [D]:  "comer" , is the infinitive, non-conjugated, Spanish infinitive verb, "comer" (to eat). 

Which city has the busiest port on the mediterranean sea? barcelona