Step 1: Understanding scale and paper size.
For a plot size of 500 sqm, the paper size required to draw a site plan at a defined scale should be large enough to show the details clearly. A paper size of A2 is typically used for larger drawings and is appropriate for site plans of this scale.
Step 2: Analyzing the options.
(A) A1: A1 is a larger paper size than A2, but it is generally not necessary for a 500 sqm plot, as A2 would suffice.
(B) A2: Correct — A2 paper size is ideal for this scale of drawing, providing enough space while maintaining clarity.
(C) A3: A3 paper may be too small for a 500 sqm plot, leading to less clarity or needing a very small scale.
(D) A4: A4 is too small for detailed site plans of a 500 sqm plot.
Step 3: Conclusion.
The correct answer is (B) A2, as it is the suitable paper size for drawing a site plan of a 500 sqm plot at a defined scale.