A weed belonging to family Asteraceae which has spread in all parts of India is
Parthenium
Parthenium is the genus of flowering plants belonging to the family Asteraceae. It is native to American tropics. It is commonly known as carrot grass, famine weed. It invades disturbed land including roadsides. It infests farmlands, causing an often disastrous loss of the yield. In India, the heavy outbreaks were seen affecting livestock, crop production and human health. It is a common invasive species in India, Australia and parts of Africa. So, the correct answer is 'Parthenium'.