The norming stage of group development is a stage of development of bonds and group identity. It is in this stage that the group develops a sense of synergy and the structure of the group solidifies. When members are in the norming stage of development, they have a feeling of togetherness and have a common set of expectations and feeling that they can accomplish more as a group than individually.
It is cheaper than anything else. But that nuclear plant could explode etc. what I'm trying to say with the last part is that there is Good and Bad. I hope this helped.
The answer is B, because muscle endurance let's you do things like running for longer periods of time and muscular strength let's you do things like lift heavy weights.