A quick way to solve this kind of figure series is to convert each marker's position into a row number and look for a numeric pattern, instead of just describing the movement in words. Number the rows 1 (top), 2 (middle), 3 (bottom), keeping the triangle always in the right column and the circle always in the left column.
Panel 1: triangle at row 1, circle at row 2.
Panel 2: triangle at row 2, circle at row 3.
Panel 3: triangle at row 3, circle at row 1.
Both the triangle and the circle simply add 1 to their row number at each step, and whenever the count would go past row 3, it drops back to row 1. This is the same as counting 1, 2, 3, 1, 2, 3 on repeat. Applying "row plus 1, wrap after 3" to panel 3 gives the row numbers for panel 4: the triangle goes from row 3 to row 1, and the circle goes from row 1 to row 2.
So panel 4 must have the triangle at row 1 (top, right column) and the circle at row 2 (middle, left column). That is the exact layout panel 1 had, since the cycle length is 3 and we have moved 3 steps forward from panel 1.
Let's sum up:
Each marker moves down exactly one row per panel and wraps from row 3 back to row 1.
Because there are only 3 distinct rows, the figures repeat every 3 panels, so panel 4 equals panel 1.
Checking the four options for this exact row-1-triangle, row-2-circle layout picks out option (A) as the only match.
