Which problematic weed is ranked first among the world’s worst weeds? (CG ADA 2020)

✅Explanation:
Cyperus rotundus, commonly known as nutgrass or coco-grass, is considered one of the world's worst weeds due to its aggressive growth, extensive root system with tubers, and resistance to many herbicides. It is a perennial weed found in various tropical and temperate regions, infesting numerous crops and causing significant yield losses.

📌 Other Options:
-Cynodon dactylon (Bermuda grass): While Bermuda grass is a widespread and persistent weed, it is not as globally problematic as nutgrass.
-Eleusine indica (Goosegrass): Goosegrass is another troublesome weed, but its impact is not as severe as nutgrass.
-Chenopodium album (Lambsquarters): Lambsquarters is a common weed, but it is not ranked among the world's worst.