Question

Identify the option that will replace the missing 3D figure in the sequence.

• A. A
• B. B
• C. C
• D. D

Hint:

For 3D rotation sequences, mentally rotate one unique feature (like a notch or projection) step by step. This prevents confusion with complex overall shapes.

Answer 1

The Correct Option is B

Step 1: Observe the sequence.
The 3D object is rotated progressively in each step. The cut-out notch and projecting block shift positions systematically as the object rotates.
Step 2: Track orientation changes.
- In the first figure, the notch is visible on the left.
- In the second, the notch rotates toward the front.
- In the third, it rotates further right.
- In the fourth, the notch is mostly hidden at the back.
Step 3: Predict next rotation.
The fifth figure should continue the rotation, bringing the notch slightly downward and tilted to the right side.
Step 4: Compare options.
- (A): Notch orientation incorrect.
- (B): Matches the expected rotated orientation.
- (C): Notch placement inconsistent with sequence.
- (D): Orientation of projection block incorrect.
Final Answer: \[ \boxed{\text{B}} \]