Final answer:
The tense of the underlined verb reveals that the event took place in the past continuously but concluded prior to another past event.
Step-by-step explanation:
The tense of the underlined verb reveals that the event took place in the past continuously but concluded prior to another past event. This is indicated by the use of the past perfect tense form 'had been coaching', which shows that the coaching had already been occurring before the subject quit and went to work at the bank. The past perfect tense is used to express actions that happened before another past action or event.
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