<p>The apparently chaotic images in certain types of contemporary painting strike many viewers as both confusing (but) delightfully original.</p>
<p>I thought it should have been "and as" but the correct answer is "and".... due to to both..and. structure... but what about the as ...as... structure here?</p>
<p>Because traffic was (unusually heavy), Jim arrived ten minutes late( for) his job interview even though he had (ran desperately) all the way (from )the bus stop. No error</p>
<p>Why is it C?</p>
<p>Because there is a “both” in the first sentence, it logically follows that that there should be an “and” (both/and, either/or, neither/nor, etc).</p>
<p>“ran” should be “run”. I suggest reading over silverturtle’s grammar guide (stickied), as it covers this (I just read it a few days ago :P). The error is that “ran” is the simple past form, while it should be the past participle because of “had”.</p>
<p>mmm so the as has nothing to do with anything in this case? and does not require as…as form?</p>
<p>This “as” is not the same as what it is in the “as … as” construction…</p>
<p>Here are examples of “as” being used in different ways separate from the “as … as” construction:</p>
<p>The images strike them as confusing. He acted as a leader. He did as promised.</p>