Rewrite the mux$4$to$1$ code in different ways and abstraction levels.

DATAFLOW, using a combination of bitwise and logical operators $($this is already done for you$)$

DATAFLOW, using nested conditional operators

DATAFLOW, using part$-$select operator $($this is by far the most concise$)$

BEHAVIORAL, using nested if$..$else $($this is already done for you; you just need to uncomment$)$

BEHAVIORAL, using case statement with default

BEHAVIORAL, using part$-$select operator

STRUCTUAL, using three instances of mux$2$to$1$