Which of the option figures will take the place of the question mark and continue the series?

Answer & explanation
Correct answer: option 4
The correct answer is Option (4) →
Two things change from figure to figure: one spoke is added each time (1, 2, 3, 4, 5 spokes), and the small triangle moves one place anticlockwise round the edge of the box each time. So the next figure has 6 spokes and the small triangle at the top-left corner.

Why the other options are incorrect
Option (1) — Incorrect. The number of spokes is right, but the small triangle has moved one place clockwise instead of anticlockwise.
Option (2) — Incorrect. The small triangle is right, but there are 4 spokes: a spoke is taken away instead of added.
Option (3) — Incorrect. The small triangle is right, but there are 7 spokes: two spokes are added instead of one.