Answer:
A. "paving the way"
Explanation:
It is saying basically you're setting it up you're not actually paving something with tar/asphalt
Since it's declarative, it ends with a period. We should add some commas as well.
<em>S</em>chool began on a cold<em>,</em> <em>S</em>eptember morning<em>.
</em>
That should work.
