Answer:
The author point out the ability of human beings to have feelings for each other through empathy which inturn create altruistic human behavior.
Explanation:
Empathy result in having compassion and understanding feelings of people who are afflicted and it's encourage others to render help. Empathy is a motivator of altruism. Altruism is a person's ego who has problems and anxieties and go out to render help to others who need it. Altruism born out of empathy is the true altruism because it is the desire to help people who are afflicted.
<span>As periods in mathematics we call groupings of large numbers (three-digits) usually separated by comma or space.
</span>
In this particular case we got two periods: 913 and 256.
Digits 913 are in the thousands period, while 256 in the units period.