Pro noun, verbs you know the normal stuff.
Can we have a picture?
I would say the correct answer is - <span>But the doctor's four friends had taught no such lesson to themselves. They resolved forthwith to make a pilgrimage to Florida, and quaff at morning, noon, and night, from the Fountain of Youth.
As you already said, allegory is something that tells us a deeper and more important story than what may seem on the surface. So these four people don't just want to go on a pilgrimage and find the Fountain of Youth on a whim - there must be something important behind their decision.
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It is only generally accepted to use different verb tenses when writing it in mid-sentence is the events that you want to show or describe did not happen at the same time. This would clearly show the difference in the time on when the events occurred. The answer would be option B.