Correct Answer - Option 2 : 0.6 cubic m

**Explanation:**

Quantity of masonry = 1 m × 2 m × 0.3 m = 0.6 cubic m

__Parameters related to brick:__

Weight of a brick is 3 kg to 3.5 kg

Temperature required for the manufacturing of brick is 1200° C

Modular size of brick is 190 mm × 90 mm × 90 mm

Nominal size of brick is 200 mm × 100 mm × 100 mm

∴ Number of bricks required for one cubic meter brick masonry = \(\frac{1}{0.2\times 0.1\times 0.1}=500~\mathbf{bricks}\)