In the following passage some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each blank.
A recent census of waterbirds conducted as a part of Asian Waterbird Census (1)______ an increase in their population in Najafgarh Jheel this year. The census also showed a (2)______ in the number of threatened species. Last year, the number of waterbird species were thirty one which climbed to fifty- four this year, while the threatened variety (3)______ from four to six in the same duration. The region also saw a healthy monsoon in 2019, which would have (4)______ impacted the quality of habitat, making it (5)______ to more birds.
Select the most appropriate option for blank number 4.
Identify the most appropriate option to substitute the underlined segment. If no substitution is required, select No substitution. The shoebill stork can be recognise from its long legs and broad wings.