In the "design a thermos" lab, the temperature of the thermos was compared with a container that was not insulated. what was the purpose of that container?

that container was a control, a basis for comparison

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

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.