What tense is represented in the sentence "He boarded the plane and sat in business class."?

The sentence "He boarded the plane and sat in business class" is an example of the Past Simple tense. This tense is used to describe actions that happened at a specific point in the past. In this case, the actions of boarding the plane and sitting in business class are completed events that occurred in the past. The use of the simple past form of the verbs "boarded" and "sat" clearly indicates that these actions were finished prior to the present moment.

In contrast, the Present Simple tense, Past Perfect tense, and Future Simple tense denote different time frames and aspects: Present Simple refers to habitual actions or general truths, Past Perfect describes an action that was completed before another action in the past, and Future Simple expresses actions that will occur later. Thus, the structure and context of the sentence reinforce that it is firmly situated in the Past Simple tense.