Question

Shown below are the key frames of a character lifting a sack. Which option will replace the question mark? 

• A. A
• B. B
• C. C
• D. D

Hint:

In animation problems, observe the character's movement and body posture at each key frame, ensuring smooth transition between frames.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
This is a key-frame animation of a person lifting a sack from the ground up to over their head, and the missing frame sits between a chest-height hold and a fully overhead lift.

Step 2: Key Formula or Approach:
Good in-between poses follow even "spacing," each key frame should represent roughly equal progress along the motion, without repeating an earlier pose or skipping ahead.

Step 3: Detailed Explanation:
Option B repeats the chest-hugging pose already shown just before the missing frame, so it adds no progress. Option D is already close to the final overhead pose, skipping ahead too quickly. Option C introduces an unbalanced kicked-out leg that does not belong in a smooth, controlled lift. Option A shows the sack and body positioned at the halfway point of the lift, matching even spacing.

Step 4: Final Answer:
Option A gives the evenly spaced in-between pose the animation needs.

Answer 2

Tracking just the character's arms and hands through the sequence gives another way to check the missing frame: they should move steadily upward and straighten out bit by bit as the sack is lifted, rather than staying bent close to the body or suddenly straightening all at once.

1. Option A: The arms are partway extended, further up and straighter than in the chest-hold frame but not yet as straight as the final overhead frame, matching a steady, gradual extension.
2. Option B: The arms are still fully bent and wrapped around the sack at chest height, no straighter than the frame right before it.
3. Option C: The arm and leg positions look unsteady and do not show a clear, gradual straightening consistent with a controlled lift.
4. Option D: The arms are almost completely straight and raised, closer to the final pose than a smooth, gradual sequence would allow at this point.

Tracking the gradual straightening of the arms points to option A as the correctly paced in-between frame.

So the correct answer is Option A.