Identify the figure given in the options which when put in place of ? will logically complete the series.

Correct — D. Track the small corner mark through the four boxes.

Rule: the mark moves one corner anticlockwise each box, and its shape flips left-to-right each box.

Box 1: an L, foot pointing right, at the top-right
Box 2: a mirrored L, foot pointing left, at the top-left
Box 3: an L, foot pointing right, at the bottom-left
Box 4: a mirrored L, foot pointing left, at the bottom-right

One more anticlockwise step from the bottom-right returns to the top-right, and one more flip turns the mirrored L back into a plain L.

All four options are drawn at the top-right, so the corner decides nothing and the orientation decides everything. The plain L is option (d).

Why the others are wrong

• (a)
  Option (a) is the mirrored L, foot pointing left — the shape box 4 has just used. The flip alternates every box, so box 5 cannot repeat it.
• (b)
  Option (b) is the L given a quarter-turn clockwise: corner at the top-left, arms running right and down. No box in the series shows that orientation.
• (c)
  Option (c) is the L turned through 180°: corner at the top-right, arms running left and down. It is the trap for reading the change as a rotation instead of a flip.

A figure series can run two rules at once on different clocks. Track them in separate columns and neither can hide behind the other.

The position column here runs one corner anticlockwise per box: top-right, top-left, bottom-left, bottom-right. That cycle has length four.

The orientation column flips the L left-to-right each box. That cycle has length two. Both cycles close after four steps, so the fifth box reproduces the first.

Key facts

• The mark's corners run top-right, top-left, bottom-left, bottom-right — one step anticlockwise per box.
• The mark's shape alternates between L and its left-to-right mirror.
• Because position repeats every four boxes and shape every two, box 5 is identical to box 1.
• A left-to-right flip and a quarter-turn rotation give different glyphs here, which is what the options test.

Common traps

• Reading the shape change as a 90° rotation, which produces the wrong glyph at box 5.
• Assuming the answer cannot be a repeat of box 1 and rejecting the right option for that alone.
• Following the corner faithfully and never checking which way the foot points.

No directly related past PYQ was found.