Which of the scenarios is NOT an example of mechanical weathering? Pls hurry

When paul realizes no one is coming to the rwandan refugees, he tells them there is only one way for them to get . what is it?

One way in which the european union encourages trade among countries is through the use of

Rational ignorance suggests that a. voters are ignorant on issues that are not of special interest to them b. voters do not pursue information about issues before voting c. low voter turnout is due to a lack of understanding of the platforms of each political party d. voters are uninterested in the electoral process