The element necessary to complete the sentence above is D) independent clause.
You already have a subject (I) and a predicate (save), so these two are not needed, nor is a prepositional phrase. But you need an independent clause, because this is a dependent clause which cannot stand on its own. For example:
If I save enough money, <em>I will buy a car. </em>
Difficult, dread, annoying, uncomfortable
A, because she thought being king was too difficult.
Shirou's cooking was good, and she's not the biggest fan of Mordred, but it's mainly the first one.
I think it might be indifference
