Studies involving communication between infants and caregivers have reliably demonstrated that .
Group of answer choices:
A) Without sufficient interaction, infants will likely develop severe mental illness later in life.
B) Human interaction, specifically touch, is critical for development and health.
C) Infants' language acquisition occurs whether or not their caregivers communicate with them.
D) Only a child's biological parents are able to influence his or her social development.

two jet streams that directly affect the formation of weather in the continental part are a polar jet and a subtropical jet. they are responsible for the transportation of weather systems, which directly affect people. the polar front is the boundary between cold air from the north pole and warmer equatorial air. both the polar jet and the subtropical jet blow from the west to the east, and follow the boundary between cold and warm air.

the strongest jet streams are polar jets, while subtropical jets are somewhat weaker.

the right answer is c. the polar jet stream is generaly stronger than the subtropical jet stream.

even though you have attached neither the chart nor the generalizations, i have located them online. the right answer is d, since they are asking you about a generalization. you can only infer from the chart that between 2008 and 2009 the number of employed workers decreased significantly (from over 115 millions to 107 millions approximately), which signals some type of economic crisis.  

answer; form new memories;