The tense of the verb pugnabunt is present imperfect future

Pugnabunt is a latin word which indicates a third-person plural active version of the word pugno, which means to engage in a combat or in a fight, or battle. It might also mean to struggle or strive according to the context.

Therefore, the tense of the verb Pugnobunt is future tense.

D). Writing a brief note thanking the interviewer and expressing your interest in the position.

Explanation:

As per the question, the most appropriate action to be taken or reaction to be displayed post an interview is to acknowledge and express your gratitude towards the interviewer that would reflect your etiquette and present a positive image of yours before him. Thus, 'writing a brief note to thank the interviewer which would mirror your interest in the position'. Therefore, option D reflects the right reaction to be displayed after an interview.