This program trained caregivers to: <span>imitate babies' babbling.
During 9month - 2 years old period, Most babies are able to respond to simple complex word (such as their name) but coudln't say that complex word.
Imitating babies babbling is showed to accelerate the process of developing the ability to say complex word from the infants.</span>
I believe the answer is D. <span>Since 1976, China has had a mixture of market economy and a communist economy.
After Mao's death in 1976, the Communist influence in China became significantly weaker.
Since the communistic system did not produce a succesful economic result for China, they decided to transform it into Mixed Economy.</span>
