A. Had been struggling
Correct Answer: A. Had been struggling
Detail about MCQs
The correct sentence would be: In other words, man Had been struggling hard for life
The sentence suggests a past action that had been ongoing over a period of time. This requires the use of the past perfect continuous tense. The correct form of the verb to use in this context is “had been struggling.” This form indicates that the man had been continuously engaged in the action of struggling in the past.