A series of nested statements can be used to process the menu selections in lieu of the case statement

If-Else statement or If-Then-Else statement depending on the language.

Explanation: Although it's not recommended to nest a hundred if statements into each other, you can use them instead of a switch/case.

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.