18. A performance expectation from physics for elementary school students includes an investigation to compare the effects of interactions between two objects. Which one of the following does not express a cause-and-effect statement?

Group of answer choices

1. Like poles repel.
2. This red car moves faster than that white car.
3. Stronger pushes make cars go faster. Not C
4. Unlike charges attract.
5. Hotter objects transfer heat to cooler objects.