Step 1: Understanding the transformation.
The pattern shows a series of transformations where shapes are altered step by step. We need to determine the next step based on the progression.
Step 2: Analyzing the options.
- (A) Option A does not fit the transformation pattern.
- (B) Option B fits the progression correctly in terms of shape alteration.
- (C) Option C is inconsistent with the transformation.
- (D) Option D also does not match the expected step.
Step 3: Conclusion.
The third step in the series is (B).