The correct answer is "customs"
Not only does it focus on customs, but also on conversations between the characters and their behavior, as well as their thinking and social status.
Answer:
Spending some time with them and helping them with a few tasks they need done but they can't. With that they feel so much loved and cared for.
The concept of heredity is that genes are not randomly passed down. Well, technically they are but we use punett squares to predict the chances of passing certain traits. Because virtually all traits that are dominant are more common than recessive ones, and because all genes are not passed in a completely random way, it is not just pure chance, but calculated chance by which we can predict the probability of what genes are passed down. Hope this helps!