Understand the four processes used in different restaurants $($McDonalds$,$ Burger King, and Wendys$),$ and then answer the following questions:

$1.$ According to the flowchart, briefly describe each of the processes

$2.$ As a customer, which process do you prefer? $($Pick the top $2$ processes$)$

$3.$ Why? $($Give the reasons based on the flowchart$)$