Final answer:
In Spanish, the word/phrase that is not a preterite trigger is O nunca.
Step-by-step explanation:
The word/phrase that is not a preterite trigger is O nunca. In Spanish, the preterite tense is used to talk about completed past actions or events. Common preterite triggers include words/phrases like después (after), el sábado pasado (last Saturday), and anteayer (the day before yesterday). However, O nunca is not a preterite trigger because it implies a condition that never happened, rather than a specific completed action in the past.
Learn more about Preterite tense in Spanish