The correct answer is: A. while age < 0
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
is as follows:while (condition) {
// code to be executed repeatedly
}
In this case, the condition is age < 0. This means that the loop will continue to execute as long as the value of the age variable is less than 0. When the value of age becomes greater than or equal to 0, the loop will stop executing.
The other options are incorrect because they do not include the condition age < 0. Option B, while (age < 0), is the same as option A, but it includes extra parentheses. Option C, while age >= 0;, is incorrect because the semicolon is not necessary. Option D, while age >= 0);, is incorrect because it does not include a closing parenthesis. Option E, while age >= 0, is incorrect because it does not include a condition.