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

For an average Indian, driving in any of the major Indian cities is equivalent to (1) ______ a daily war. The everyday struggle of (2) ______ traffic, pollution and rash drivers is (3) ______ biggest cause of chronic stress and other (4) ______ problems. On an average a person spends (5) ______ between thirty minutes to two hours of their day driving.

Select the most appropriate option to fill in blank no.4.