Correct option is C
Let's list each shape with its number of sides:
Hexagon – 6 sides
Triangle – 3 sides
Pentagon – 5 sides
Square – 4 sides
Octagon – 8 sides
Now arrange them in increasing order of sides:
Triangle (3 sides) → 2
Square (4 sides) → 4
Pentagon (5 sides) → 3
Hexagon (6 sides) → 1
Octagon (8 sides) → 5
Correct order: 2, 4, 3, 1, 5
Final Answer: C. 2, 4, 3, 1, 5