Answer:
An algorithm is a step by step process that describes how to solve a problem in a way that always gives a correct answer.
An algorithm is made up of three basic building blocks: sequencing, selection, and iteration.
Sequencing: An algorithm is a step-by-step process, and the order of those steps are crucial to ensuring the correctness of an algorithm.
Selection: Algorithms can use selection to determine a different set of steps to execute based on a Boolean expression.
Iteration: Algorithms often use repetition to execute steps a certain number of times or until a certain condition is met.
Step-by-step explanation: