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

The rise in the Irrawaddy dolphin (1) ______ in Chilika can be attributed to the eviction of (2) ______ fish enclosures. After thousands of hectares of Chilika lake were made (3) ______ free, Irrawaddy dolphins found unobstructed area for movement. (4) ______, due to the COVID-19 lockdown last year, there were comparatively fewer tourist boats on Chilika lake, which made it (5) ______ for dolphins to move from one part of the lake to another.
Select the most appropriate option to fill in blank no.1.

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

The rise in the Irrawaddy dolphin (1) ______ in Chilika can be attributed to the eviction of (2) ______ fish enclosures. After thousands of hectares of Chilika lake were made (3) ______ free, Irrawaddy dolphins found unobstructed area for movement. (4) ______, due to the COVID-19 lockdown last year, there were comparatively fewer tourist boats on Chilika lake, which made it (5) ______ for dolphins to move from one part of the lake to another.Select the most appropriate option to fill in blank no.1.