Question

A model without any simplifying assumptions:

a. excludes important predictive variables.
b. does not look like the real-world problem it is meant to address.
c. is highly complex and likely unworkable.
d. provides simplified solutions to complex problems.
e. is very helpful for solving tough, real-world problems.

Answer 1

The answer is C.: Is highly complex and likely unworkable
The simplifying assumption is a method that helps us to understand a certain complex system on a much more simpler point of view.
The purpose of creating a model is to make a smaller prototype of an actual system, not the ystem itself. (for example, in a model of Galaxy, it won't include the complex gravitational pulling between the planets)