Which of the following is not a reason childhood friendships are important to development? A.
Positive relationships provide positive psychological support.
B.
Friends are a child's first chance in learning how to be social with siblings.
C.
Adolescents can use friendships as a way to work out personal problems.
D.
Children can learn what it means to be loyal through their friendships.

An engineer decides to use a slightly weaker material rather than a stronger material, since she knows that the stronger material can break suddenly. this is an example of what? a choosing a material that will show warning before it fails b using composite materials that combine strength c using a material for multiple applications d using design techniques that increase efficiency and reduce cost