Answer:
To translate the phrase "Last summer I traveled to Spain" to Spanish, the verb tense that should be used is:
a. preterite tense for a completed action
Explanation:
The translation to Spanish would be:
El verano pasado viajé a España. "Viajé" is the preterite of the verb "viajar" in the first person of the singular. The imperfect in this case would be wrong as the use of "last summer" plus the verb "traveled" indicates that is an action in the past that is already completed. The imperfect would be correct if the action was a habit in the past or a description. For example: "En mi niñez viajaba a España todos los veranos". In English: During my childhood I used to travel to Spain every summer.
