Normally, political candidates send out campaign material in order to influence popular opinion.
Conclusion
The ads sent recently for Ebsen's campaign were evidently testing the ads' potential to influence popular opinion.
Evidence
They were sent to too few households to be trying to actually influence popular opinion. Also, they covered a wide range of topics, and Ebsen's campaign has spent a bunch of money following up with recipients to gauge their effect.
Evaluate
This problem is a modern Bait n' Switch for all the LSAT students savvy enough to know that half the time on Main Conclusion questions, the Conclusion is found attached to some "but / yet / however" rebuttal.
We always need to verify our Conclusion pick by making sure it passes the Support Test. Does the 2nd sentence have support? why should we believe that? [crickets]
A supporting reason for that claim would sound something like, .
The opinion indicator "evidently" in the 3rd sentence is the one bone they're throwing us to help us find the Main Conclusion.
Why should we believe that
Because they covered a wide variety of topics and Ebsen's campaign spent lots of money following up with recipients to gauge the effect of the ads.
Goal
As always with Main Conclusion questions, the only hard part is finding the Conclusion. If we do that correctly, then picking the correct answer is a straightforward task of finding a meaning match.
So pick something that means the same thing as .