Select a suitable figure from the Answer Figures that would replace the…

Concept: In a figure-series (figure completion) question, each figure in the sequence is produced from the previous one by applying ONE fixed geometric transformation — typically a rotation through a constant angle in a constant direction, sometimes combined with an inversion (a flip about an axis). To find the missing figure, first identify this single operation from the figures already given, then apply it exactly once more to the last given figure.

1. Compare Problem Figure 1 with Problem Figure 2: the whole figure turns 90° anticlockwise, and the attached block is inverted as it goes round the turn — this single operation (90° ACW rotation + inversion) is the rule at work.

2. Apply the same 90° anticlockwise turn (with the matching inversion) to Problem Figure 2 to reach Problem Figure 3 — one further step of the identical rule.

3. Apply the identical 90° anticlockwise turn (with inversion) to Problem Figure 3 to predict the missing figure — this yields exactly the loop-hook-bracket layout shown in Answer Figure 3.

Cross-check: reversing the operation — rotating Answer Figure 3 by 90° clockwise and undoing the inversion — reproduces Problem Figure 3 exactly, confirming that one single rule governs every step of the series without exception.

Hence, Answer Figure 3 is the figure that correctly replaces the question mark.