Magic Roller: Solution

Answer: B


A and C both have an incorrect second symbol, which should be a circle. D is incorrect as only the first two symbols are correct.

B results after applying the algorithm described above

It’s Computational Thinking:

CT Skills - Algorithmic Thinking, Decomposition, Patterns, Evaluation

CS Domain - Iterative Patterns and Processes

This task involves identifying the pattern and following an algorithm. Algorithms are sequences of instructions that need to be followed in a specific order.