My financial advisor was helping me to pay up a massive amount from debt I incurred after medical school.
Which of the following phrases given below the sentence should replace the phrase printed in bold letters to make the sentence grammatically correct? Choose the best option among the five given alternatives that reflect the correct use of phrase in the context of the grammatically correct sentence. If the sentence is correct as it is, mark “No improvement required” as the answer.

To determine the correct phrase, let us analyze the grammatical errors in the original bolded phrase: "to pay up a massive amount from".

First, let us examine the phrasal verb. The sentence is about clearing or discharging a debt. The phrasal verb "pay up" means to pay money that is owed, but it is typically used when someone is reluctant to pay or is paying under pressure (e.g., "Pay up what you owe!"). The correct phrasal verb for completely clearing, discharging, or eliminating a debt or loan over time is "pay off".

Second, let us examine the prepositions. The original sentence uses "a massive amount from debt". The noun "amount" should be followed by the preposition "of" to specify what the quantity consists of (i.e., "amount of debt", not "amount from debt"). Therefore, "a massive amount of" is the grammatically correct construction.

Combining these two corrections, the phrase "to pay up a massive amount from" must be replaced with "to pay off a massive amount of" to make the sentence grammatically correct and contextually appropriate.

Let us look at the complete corrected sentence:
"My financial advisor was helping me to pay off a massive amount of debt I incurred after medical school."