Questions: To take action as long as a condition remains true, you use a

The answer is the second one (b): loop.

Explanation for each option:

a. Selection: This refers to decision-making structures in programming, such as if-else statements, which execute certain actions based on whether a condition is true or false. It is not used for repeated actions as long as a condition remains true.

b. Loop: This is the correct answer. A loop is a programming construct that repeats a block of code as long as a specified condition remains true. Common types of loops include "while" loops and "for" loops.

c. Sequence: This refers to the execution of statements in a specific order, one after the other. It does not involve repeating actions based on a condition.

d. Stack: This is a data structure that follows the Last In, First Out (LIFO) principle. It is not used for executing actions based on a condition.

In summary, to take action as long as a condition remains true, you use a loop.