A sounds best because the best relations for a human is risks. All humans have risks, that is what makes us human. D wouldn't make since because in order for a human to succeed they have to have risks and mistakes so that they can learn from them
Global warming will cause a change in human technology, as we adapt to the Earth's temperature slowly rising, and we learn new ways to generate cleaner energy. The economy will also continue to progress. As goods and services become more an more expensive, jobs will start paying more as well and more money will need to be printed. Some things will still stay the same though, such as education, work, and social norms.
The quint- prefix means 5, so five babies.
