PART B: Which detail from the text best supports the answer to Part A?

A
“From an evolutionary point of view, altruism doesn’t seem to make any sense. According to the modern Neo-Darwinian view, human beings are basically selfish.” ( Paragraph 2)
B
“Of course, we felt an instinct to help other members of our group, because our own survival depended on the safety of the group as a whole, and because, more indirectly, this would support the survival of our genes.” ( Paragraph 4)
C
“Or, more seriously, perhaps it was the result of moral conditioning, a respect for living things and an impulse to ‘do good’ which was ingrained in me by my parents?” ( Paragraph 7)
D
“We can sense their suffering because, in a sense, we are them. And because of this common identity, we feel the urge to alleviate other people’s suffering - and to protect and promote their well-being” ( Paragraph 9)