The main idea of this paragraph is that the rocks cannot be explained by science, that there is a mystery to them. This sentence contributes to that idea because it gives a specific example of one of the odd things about the rocks. Because they are on a flat surface they should not roll or move on their own, but the fact that they have a trail behind them shows that they have somehow moved. This supporting statement is then supported by more details about the trails.
It’s probably the first one hopefully you will get it
Answer:
Before; the same day
Explanation:
Josie listened to a speech on the radio advocating the increased use of automobiles that are not reliant on fossil fuels. One would expect the sleeper effect to be greatest if Josie found out about the background of the speaker before the speech and was asked about his views about the issue the same day.
Hope this was helpful
