Final answer:
The correct order of succession from first (1) to last (4) is: a, c, b, d.
Step-by-step explanation:
Order of Succession:
Image a: bare ground with nothing growing
Image c: grasses under a sunny sky
Image b: bushes, trees, and grasses under a sunny sky
Image d: fire engulfing trees
The correct order of succession from first (1) to last (4) is: a, c, b, d.