Bunuel
Both the Federal Reserve's decision
that borrowing rates be raised, along with investor's speculation that another increase might be on the way, helped bolster the dollar in recent weeks by making deposits more attractive.
A. that borrowing rates be raised, along with investor's speculation that another increase might be on the way, helped bolster the dollar in recent weeks by making
that isn't the right usage to feels more appropriate and the inclusion of comma is also deemed unnecessary hence out
B. that borrowing rates be raised and investors' speculation of possibly another increase on the way helped to bolster the dollar in recent weeks because they made
Similar reasoning as A and the addition of they is unecessary and ambigious in the end
C. to raise borrowing rates and investors' speculation that another increase might be on the way helped to bolster the dollar in recent weeks by making
This has the right tense and portrays the right meaning therefore let us hang on to it
D. to raise borrowing rates, along with investors' speculation that another increase might be on the way, helped bolster the dollar in recent weeks because it made
Here two dependent clause are seperated with comma which distorts the right meaning
E. to raise borrowing rates and investors' speculation of possibly another increase on the way helped bolster the dollar in recent weeks because they made
the addition of before possibiy was one reason in addition to the inclusion of because in the end which isn't appropriate
Therefore IMO C