Ok so, clearly every one who has a doubt is between C & A.
I will elaborate it in detail but donot skip what I am saying coz you need complete approach.
AS B,D,E are wrong I won't waste time on them.
LETS ANALYSE C,
Try to read the entire clause after comma,
More for the reason it was the first time a congressional hearing was shown on television.
Do you see the awkward construction?
IF YES, congrats.
Want more?
HERE
we need a "that" after reason, everyone was correct to say that so relates to the previous clause,
Try to see it this way
X more so because Y
X more for the reason Y
X & Y must be independent clauses
sub ordinate in case of because. Search for types of clauses and see their usage. Download SC grail by aristotle. Do some research on usage.
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