How does the speaker view of her mother change as she grows older?

Which statement best explains the function of the subtitlein this text? a. it provides additional information that narrows the focusof the text. b.it draws attention to important information in the table ofcontents. c.it introduces the various sections that appear withineach chapter. d.it explains the author's primary reason for writing aboutthis topic. correct (a)

Experiments were conducted to try to teach chimpanzees sign language

How did rick respond to this conflict