QUESTION 14 Which of these operators can be used to concatenate two or more String objects? & .add && QUESTION 15 Which statement is correct? O The while loop repeats a set of code while a condition...

Extracted text: QUESTION 14 Which of these operators can be used to concatenate two or more String objects? & .add && QUESTION 15 Which statement is correct? O The while loop repeats a set of code while a condition is not met. O The number of iterations required of a while loop is always known before the while loop begins. The while loop repeats a set of code while a condition is met. O The while loop does not require code to be added to manage iteration during each loop.