easy · LSAT Logical Reasoning
A store manager noticed that sales increased after switching to eco-friendly packaging. The manager concludes that eco-friendly packaging caused the rise in sales.
Which one of the following, if true, would most weaken the manager's conclusion?
- The eco-friendly packaging costs slightly more to produce than the packaging the store used previously.
- Several competitors also use eco-friendly packaging.
- The manager personally prefers eco-friendly packaging.
- The store also lowered its prices at the same time it switched packaging.
- Sales had been flat for several months before the switch.
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