Explanation
The correct answer is (A) Parthenium.
Congress grass is a popular name for the invasive weed species Parthenium hysterophorus. It is called Congress grass due to its rapid spread and dominance in open areas, similar to the way political parties spread their influence. Parthenium is notorious for its ability to outcompete native plants, causing significant ecological and agricultural damage. It is considered a major weed problem in many countries, including India, where it affects crop productivity and causes allergic reactions in humans and animals.
