<p>With billions of tons yet to be mined, some argue that coal conservation measures are unnecessary.</p>
<p>a) fine as it is
b) Because billions of tons of coal are</p>
<p>I thought it was fine as it is!! Please explain why it's B!! 'with billions of tons' sounds totally fine to me .... god</p>
<p><with billions=“” of=“” tons=“” yet=“” to=“” be=“” mined=“”>, some</with></p>
<p>rephrase this.</p>
<p>Some people, with bil of tons yet to be mined, argue that…</p>
<p>Got it?
The people dont have coals to be mined…</p>
<p>with billions of tons is ambiguous - it does not specify billions of tons of what is yet to be mined. Option clarifies and specifies</p>
<p>This was a tricky one.Pay more attention</p>
<p>“With billions of tons yet to be mined” - With billions of tons of what to be mined.the phrase as it is does not clearly state that.So the answer is “Because billions of tons of COAL are”</p>