sat writing questions

<p>ms. jordan <em>proudly</em> <em>demonstrated</em> her company's most popular product, a watch that flashes the time in <em>lighted</em> numerals when <em>pressing a button</em>.</p>

<p>can somebody explain to me why <em>pressing a button</em> is wrong? is there a more idiomatic phrase or something?</p>

<p>another question
is there a rule that states that a pronouns (such as "it") refer to what they're closest to?</p>

<p>In that sentence, there is no subject 'pressing a button.' It just doesn't make much sense.</p>

<p>"its button is pressed." would make more sense.</p>

<p>And for the second question, I'm not sure if there's a 'rule' per se but it just makes logical sense.</p>