What did the characters learn in “La Luna”

I can hardly buy a new car on account of the high price of cars in Egypt. (letter A)

Explanation:

The sentence needs to be completed with a term that shows the relationship of cause and effect. The speaker says he or she can hardly buy a new car. And why is that? Because of the high price of cars in Egypt. The term that has the meaning we need is found in letter A. "On account of" is the same as "because of".

- I can hardly buy a new car on account of (because of) the high price of cars in Egypt.

All the other terms do not present this same function. Besides that, they all demand more information from the second sentence. Just as an example, let's use letter B.

- I can hardly buy a new car supposing the high price of cars in Egypt... -what? See how incomplete it sounds? Supposing the high price does what? The same will happen if we use letters C and D. The sentence will sound incomplete.