. Which type of norms are considered to be necessary for the welfare of society?

A. folkways

B. informal norms

C. formal norms

D. mores

c.formal norms

Explanation:Mores: are norms deemed highly necessary to the welfare of a society, often because they embody the most cherished principles of a people. Folkways: are noms governing everyday behavior whose violation raises comparatively little concern.Norms are the established standards of behavior maintained by a society. To be considered a norm, these social rules must be shared and understood by a large number of people. ... Laws are an example of formal norms.

a, c, d, e are all applying about success strategies.

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it