Answer:
"Studies conducted by one prominent social media website show that ads did not get many clicks at all."
Explanation:
The above statement from the passage is the statement that MOST requires further supporting evidence.
The statement reveals that "studies were actually conducted". In order for the speaker to convince his audience or readers with that statement, further evidence are needed. The evidence needed is the outcome of the studies that was conducted and stating the name of the prominent social media website that conducted the study will also make the evidence stronger and believable.
This statement is the one that MOST requires supporting evidence because having stated that studies were conducted, an evidence then is needed to prove and authenticate that claim/statement.
Voice sound is amplified and modified by the vocals tract resonators.
Neither and nor are used together.
Either and or are used together.
B uses neither and or together, so that is wrong.
C uses either and nor together, so C is wrong.
D uses neither and or together, so D is wrong.
That leaves A.
A used neither and nor together, which is correct.
So the answer is A.