The study of Dr. Ruth Mace and Dr. Rebecca Sear shows that a child's growth may be affected ______.

A．It makes people think of kindness, frailty, old fashion, etc.
B．The word has different associations for different people.
C．The word brings a sense of security to children.
D．The word means an impediment to real researc

A．was interested in studying the lives of the old women in Australia
B．admired the hard working elder females he saw in Australia
C．was the first to recognize the crucial role played by grandmothers
D．loathed the old women he saw in Australia for their ugliness