In VB, The while loop is end by . . . . . . . .

The correct answer is A. stop.

A while loop is a control flow statement that allows code to be executed repeatedly as long as a condition is true. The syntax for a while loop in VB is as follows:

while condition
statements
end while

The condition is evaluated before each iteration of the loop. If the condition is true, the statements inside the loop are executed. After the statements are executed, the condition is evaluated again. This process continues until the condition is false.

The keyword “stop” is used to end a while loop. When the “stop” keyword is encountered, the loop is immediately terminated.

The other options are incorrect. The keyword “next” is used to end a for loop. The keyword “wend” is not a valid keyword in VB. The keyword “nested” is not a keyword that is used to end a while loop.

Here is an example of a while loop in VB:

“`
Dim i As Integer
i = 1

While i <= 10
Console.WriteLine(i)
i = i + 1
End While
“`

This code will print the numbers from 1 to 10.