This is a control structure that causes a statement or group of statements to repeat.

a. decision statement

b. constant loop

c. cout object

d0 None of these

D. None of these

Explanation:

The control structure that causes a statement or a group of statements to repeat is called a control loop, or simply, a loop.

In many programming languages, a loop contains a group of statements that are executed repeatedly based on a certain criterion (or condition). As long as this condition is true, the statements within the loop are executed.

Three types of control loop structure are the for, while and do ... while loops.

B. Constant Loop

Explanation:

Looping involves going over a block of code or statement infinitely or over a particular number of times. There are a number of loops, such as the infinite loop, while loop, do-while loop among others.

Infinite loop: All loops are expected to terminate after a few iterations, however, if that block of code is not available, the loop is said to be an infinite loop. This is because it will iterate continuously and indefinitely.

While loop: Also referred to as a Pretest loop, because before the statements are executed in its body, it verifies the boolean expression.

Do-while loop: Also referred to as a Posttest loop, because it tests the boolean expression after the block or statement is executed.