Weak ties are valuable parts of a social network because:a.it is easier to sever them if a friendship doesn't blossom...

Weak ties are valuable parts of a social network because:a.it is easier to sever them if a friendship doesn't blossom smoothly.b.it is easier to exert power over those to which we have such ties.c.they are more likely to introduce us to new information and ideas.d.we do not have to invest as much energy in maintaining them.