What is a summary for the science of human decision making

One important character trait which levi to compete well is revealed in the first paragraph. it is that a) he is often fearful. b) he thinks before he acts. c) he tends to be suspicious. d) he is good at finding hidden things.

Why does the author of exploring the titanic give background information about his youth and education? to show his lifelong love for the ocean

2dogs and 2 humans how many people are there? animals are considered as people too?