Answer:
C. Arteries carry oxygenated blood, while veins carry blood low in oxygen
Explanation:
He wants to help people cause people help him.
Answer: keeping the volume down on headphones while listening to music
Explanation:
It prevents hearing damage
the other 3 provide distractions from the outside world, potentially leading to major injury/death
Satisfaction in economic terms is the benefit that an individual gains from consuming a given amount of goods or services.
Maximizing satisfaction means receiving the most benefits with relatively few costs.
There is also additional bit of satisfaction, or amount of utility, gained from each extra unit of consumption. This is called a marginal utility.