Correct option is B
To construct an equilateral triangle of 35 mm side, the correct sequence must follow logical geometric steps. First, draw a base line and mark AB = 35 mm (Step 2). Next, using A and B as centers and radius equal to AB, draw arcs that intersect at point C (Step 3). This ensures all sides are equal.
After locating point C, join CA and CB to complete the triangle (Step 1). Finally, confirm that ABC is the required triangle (Step 4).
The order ensures proper geometric construction and accuracy. Any deviation from this sequence may lead to incorrect or incomplete drawing.