Read the following passage and answer the questions that follow.

Comprehension:

Dust storms of May 2018, in Northern India, contributed to the deteriorating air quality in the region and the capital city of Delhi, with implications for human health, a study found. The high death toll from the severe dust storms that lashed the region was mainly attributed to the intense winds, which surprised even scientists and meteorologists. But apart from the immediate damage to life and property, drastic changes in air quality from the dust engulfing the region affected far more people with potential implications for human health, stated a team of researchers who analysed the impact of the spell of dust storms that struck the region that month. They reported increases in particulate matter, mainly in Delhi and urged for an early

Dust storms commonly occur in the Indo-Gangetic Plains - the fertile plains in northern India that stretch all the way to the East - from March to May, the pre-monsoon season. Westerly winds typically bring loose sand and soil particles, picked up from the Arabian Peninsula or the Thar Desert in North Western India, to the Indo-Gangetic Plains. The dust tends to worsen air quality over the Indo-Gangetic Plains, home to around 900 million people, which can have far-reaching effects on human health. While dust storms are a regular feature in the region,
the May 2018 dust storms specifically had a death toll of about 100 people, with around 200
people injured.

“We are concerned that the dust impacts the health of people who get exposed,” said a senior professor. However, he also observed that scattered rains occurring soon after the dust storms tend to clean up the dust, improving air quality. During October-November, densely
populated cities like Delhi and Kanpur in the Indo-Gangetic Plains are vulnerable to wind borne long-range air pollution from crop residue burning in the North, and now this study “shows the effect of dust storms during the March-May time frame,” Sarkar pointed out. “This
really puts the Indo-Gangetic valley in a unique spot in terms of it being targeted by these different hazardous conditions which are mostly outsourced from other areas.”