Which of the following objects would require the use of a small-scale model? a) an atom b) the planet saturn c) the highway system in florida d) the path of an ocean current.

The one that would require the use of  a small scale model is : atom

an atom is the smallest unit of a chemical element, which means that it's impossible to be seen with a normal vision. Small-scale model would be required in order to observe it

hope this helps

The figure is not necessarily a parallelogram because only one diagonal is bisected and only one pair of sides is congruent.