Parents in Oceania are often afraid of their children because they believed that the minds of a child could just be easily manipulated and controlled and they could be used as a spy against their parents. Therefore, they give extreme security to their children so as the incident be avoided to happen.
24 dollars is the least amount they could have spent
Fuel conservation is the platform to conserve the use of fossil fuels. It is also a movement that informs people to conserve fuels or use less fuel. You can conserve fuel by not bringing a car in the office because it can help in conserving fossil fuels and this is the simpliest way of doing it.
I believe your answer is B, they help your audience understand and remember. This will also help people who think mostly in images to understand your presentation.