Right answer:
llora
Hace cuatro minutos takes the English form four minutes ago. Moreover, el bebé translates into the baby. Since we use the definite article that matches the masculine singular form, then this baby is a boy. On the other hand, this sentence uses negation because of the word no, that is an expression we use to contradict some or all of the meaning of a positive sentence. Finally, llora is the conjugation of the verb llorar for the third person singular in the simple present. Finally:
Hace cuatro minutos que el bebé no llora
