Correct option is A
✅ (a) 1.5 kg: • Seed rate of marigold (Tagetes spp.) depends on the type (African or French), but 1.5 kg/ha is generally suitable for transplanting. • For direct seeding, the rate may go up to 2.5–3.0 kg/ha. • Proper spacing (30 × 30 cm) and seed treatment help ensure optimal germination and plant stand.