Desirable characteristics of designs include:
a. high coupling b. high complexity c. truedependency d. high cohesion

High cohesion

Explanation: Cohesion in general refers to make a couple of the functions or characteristics to share the functions and content . In the field of computer science , cohesion is the best characteristic that can be included in the design because it connect the  various software so that they can share the responsibilities , function and can achieve better output through this. Thus high cohesion is the most preferred factor.

only #2 represents an object at rest on a table.

in #1, there is no normal force due to the table; the object is accelerating downward.

in #3, the vertical forces are not balanced; the object is accelerating downward.

in #4, neither the vertical nor the horizontal forces are balanced. the object is accelerating upwards and to the right.