A farmer has a 2-hectare farm and wishes to plant maize at a spacing of 75 cm × 50 cm with one plant per stand. What is the plant population per hectare?

Plant population per hectare is calculated as: $\frac{10{,}000 \text{ m}^2}{0.75 \text{ m} \times 0.50 \text{ m}} = \frac{10{,}000}{0.375} \approx 26{,}667$ plants per hectare. Option A results from dividing by 0.75 alone, option C from dividing 10,000 by 0.50, and option D from using 25 cm × 100 cm spacing.