<p>today’s political candidates may reach wide audiences by appearing [on television, but old-fashioned barnstorming still has value because it allows] the electorate to meet candidates face to face</p>
<p>A. same
B. television, but old fashioned barnstorming still would have value because of allowing
C. telelvision; however there is still value in old fashioned barnstoring by allowing</p>
<p>the correct answer is a but why cant it be C?</p>
<p>too wordy:/?</p>
<p>
You use the word “by” when you want to explain how something is done. For example, if I want to explain how I am forming these sentences right now, I might say, “I am forming my sentences by typing.” Nothing is being done in the clause “there is still value in old-fashioned barnstorming” because there is no real verb (only a dummy verb). There isn’t even a real subject, so we don’t know who’s doing the “allowing.” Stick to the original: “Old-fashioned barnstorming still has value because it allows. . . .”</p>
<p>It is like saying “It is cold by being winter” instead of “It is cold because it is winter.”</p>