In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Delhi’s meteorology (1) ______ the quantity of chaff burnt play a greater role in (2) ______ air quality than the time chosen by farmers in Punjab to start crop burning, a study argues. Crop burning, a traditional practice in Punjab and Haryana of (3) ______ fields off rice chaff to prepare for winter sowing, begins around October and (4) ______ in November, coinciding with the (5) ______ of southwest monsoon.