Which one of the following is used in preparing a natural mosquito repellent?

1. A. Congress grass
2. B. Elephant grass
3. C. Lemongrass
4. D. Nut grass

Answer: C

Explanation

Citronella the essential oil found in Lemongrass is registered with the FDA. It is the most widely used natural mosquito repellent found in candles, sprays, and lotions. To help deter mosquitoes with its strong fragrance, plant lemongrass along walkways and in locations close to seating areas. Hence, option (c) is the correct answer.