GMAT Critical Reasoning (CR) | Re: The Tricounty Bridge was supposed to relieve traffic in East Countway

Let us simplify the argument--

Traffic in East Countyway has gotten worse after opening Tricounty Bridge --> To relive traffic, Tricounty Bridge should be closed.

this is not a very strong argument. What if the traffic increased because of some other reason? Closing the bridge then would worsen the situation even more.

Let us take a look at other answer options--

Option A - Incorrect

This provides an alternate reason for the increase in traffic in East Countyway. Closing the bridge would
...

---