<p>I already posted this writing question before, but I did not recieve any explanations for the answer. I was wondering if anyone would be able to explain why A is the correct answer in this question. </p>
<p>Not very particular [in] nesting [sites], house wrens [may nest] in birdhouses, mailboxes, building crevices-even in the pockets [of] hanging laundry. [no error]</p>