Answer:
Hi namekwarrior74!
It seems that the sentence
(Sometimes student loan debt is an inevitable pathway towards paying for college.) doesn't have any underlined words so all I can do is give a synonym for every word.
sometimes: occasionally
student: pupil
loan: credit
debt: bill
inevitable: unavoidable (probably this one)
Explanation:
D - Desalination reduces the salinity of salt water so it is drinkable.